Car Forum / Honda Cars / January 2006
5-20 oil on 98 Accord-I4?
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eh - 04 Jan 2006 00:22 GMT Dear Experts,
I bring my 98 4-cyl Accord to Honda dealer for regular oil change. Lately, they started use 5-20 oil for oil changes for all the cars. The advisor told me that unless I explicitly tell them otherwise, they will be using 5-20 oil as default.
My question is: Since my car is not new(7 years, 105K miles), can I still use 5-20 engine oil? Will it offer less protection than 5-30 or 10-40? After all, 5-20 oil is newer and more expensive.
Some people tell me to switch to 10-40 oil as car ages. When should I be switching to that grade?
Thanks for your help in advance.
EZ
hondaman - 04 Jan 2006 02:05 GMT I would just go with what the dealer recommends. that's usually the best thing. i'm wondering about that weight of oil myself because i have a real old civic that calls for 5w-30 and i wonder if it would be better with 5w-20.
-jeff
> Dear Experts, > [quoted text clipped - 13 lines] > > EZ L Alpert - 04 Jan 2006 02:32 GMT > I would just go with what the dealer recommends. that's usually the > best thing. i'm wondering about that weight of oil myself because i > have a real old civic that calls for 5w-30 and i wonder if it would > be better with 5w-20. I would go with whatever the manual specifies, irregardless of what the dealer says. I assume it is not under warranty, so if anything goes wrong, the owner foots the bill.
> -jeff >> Dear Experts, [quoted text clipped - 14 lines] >> >> EZ Elmo P. Shagnasty - 04 Jan 2006 03:44 GMT > I would go with whatever the manual specifies, irregardless of what the > dealer says. there is no such word as "irregardless". Use either "irrespective" or "regardless".
Eye Indo - 04 Jan 2006 05:32 GMT Uhum.... and please do not reiterate ....
"Elmo P. Shagnasty" <elmop@nastydesigns.com> >
> there is no such word as "irregardless". Use either "irrespective" or > "regardless". karl - 04 Jan 2006 17:36 GMT > Date: Wed, Jan 4 2006 5:32 am > From: "Eye Indo" > > [...] please do not reiterate .... Do not reiterate what?
Eye Indo - 04 Jan 2006 22:25 GMT Hmmm... I actually answered Elmo's post where he stated that there was no such word etc .... So I used the same "error", by using a similar "not correct word". HTH.
> Do not reiterate what? L Alpert - 05 Jan 2006 01:28 GMT >> I would go with whatever the manual specifies, irregardless of what >> the dealer says. > > there is no such word as "irregardless". Use either "irrespective" or > "regardless". As long as the content was understood, the rest is irregardless.
L Alpert - 05 Jan 2006 01:33 GMT >>> I would go with whatever the manual specifies, irregardless of what >>> the dealer says. [quoted text clipped - 3 lines] > > As long as the content was understood, the rest is irregardless. BTW: http://www.m-w.com/dictionary/irregardless
Elliot Richmond - 04 Jan 2006 17:45 GMT >I would just go with what the dealer recommends. that's usually the best >thing. i'm wondering about that weight of oil myself because i have a real >old civic that calls for 5w-30 and i wonder if it would be better with >5w-20. Here is what I learned about the chemistry of motor oil about 8 years ago (I needed the information for a technical paper). The information may be out of date, but I would think it still applies.
So called multiviscosity oil (a misnomer) contains hydrocarbon polymers. Polymers are molecules built around long chains of carbon atoms, maybe 100 or so atoms in the chain. Plastics are polymers. DNA is a polymer. Polymer just means a long chain of similar units.
These long molecules are tightly coiled up at low temperature (due to hydrogen bonds) but at higher temperatures, the molecules uncoil and get tangled together. This "tangling" effectively gives the oil a higher viscosity and is what causes the viscosity of the oil to remain higher as the temperature is increasaed.
The problem is, as I understand it, that for oils with a wide difference between low and high temperature viscosity (such as 10W-40) such a large quantity of polymer must be added that the polymers begins to gunk things up. So it is best to stay with an oil where the two numbers are closer together.
My Honda owners manual recommends 5W-30, but allows 10W-30 in certain temperature ranges. Down here in Texas (where the temperature right now is 81 degrees) it never gets cold enough to neede the lower viscosity oil, so I always insist on 10W-30. The polymer problem MAY be why Honda and other manufacturers have gone to 5W-20 as a recommendation.
On the other hand, there are many characteristics of motor oil that are a lot more important than actual viscosity. As another poster has said, these include such things as film strength, ability to hold contaminants in suspension, etc. Modern motor oils are far superior to the stuff I had to pour in my car 50 years ago and are an important part of the reason why automobile engines can easily go 200,000 miles or more with no problems.
Just my $0.02 worth.
Elliot Richmond Freelance Science Writer and Editor
John Horner - 04 Jan 2006 04:57 GMT > Dear Experts, > [quoted text clipped - 13 lines] > > EZ I would use whatever grade your original manual calls for, which is probably either 5W-30 or 10W-30. I am not aware of Honda recommending the application of 5W-20 to vehicles which did not originally specify it.
John
Michael Pardee - 04 Jan 2006 12:33 GMT > Dear Experts, > [quoted text clipped - 13 lines] > > EZ 10W-40 was common in older cars, which tended to become oil-burners with age. It doesn't flow as freely as 5W-30 so it doesn't lubricate quite as well. All things being equal, all viscosities would be fine. It is the film strength, not the viscosity, that provides the wear protection. But low viscosity helps the oil actually get to where the lubrication is needed, so in the real world of modern engines it lubricates better. I agree with the others, though; if Honda felt 5W-20 was the right choice they would have specified it.
Changing to 10W-40 in a Honda is an end-of-life move; an acknowledgement that something has already gone wrong (like an inadequate air filter being used for too long, or too infrequent oil changes) and the engine is being nursed along another year or two. Improvements in engine production have ended the oil consumption problem in most engines.
Mike
Grahame - 04 Jan 2006 22:17 GMT Tell the advisor that you do not want to pay for the more expensive 5W-20 oil when the cheaper 5W-30 is just fine for your vehicle.
> Dear Experts, > [quoted text clipped - 13 lines] > > EZ hondaman - 04 Jan 2006 23:12 GMT for the right price i would use the more advanced motor oil 5w-20. more than likely it is a better oil for your car. your owners manual was written before that oil was even thought of probably and now it's out and if your manual could be rewritten it may actually be calling for w20. i wouldn't worry about it. if the car is running good and you talk to the dealer and they tell you its a better oil. than you can use it.
-jeff
> Tell the advisor that you do not want to pay for the more expensive 5W-20 > oil when the cheaper 5W-30 is just fine for your vehicle. [quoted text clipped - 16 lines] >> >> EZ Howard H - 06 Jan 2006 01:51 GMT > for the right price i would use the more advanced motor oil 5w-20. more > than likely it is a better oil for your car. your owners manual was > written before that oil was even thought of probably and now it's out and > if your manual could be rewritten it may actually be calling for w20. i > wouldn't worry about it. if the car is running good and you talk to the > dealer and they tell you its a better oil. than you can use it. Well said! As oils evolve Honda has changed reccomendations that may differ from your owners manual. The industry specifications continue to change and as oils improve they become better for your vehicle even though they may be a different weight.
>> Tell the advisor that you do not want to pay for the more expensive 5W-20 >> oil when the cheaper 5W-30 is just fine for your vehicle. The two weights are usually the same or very similar in price. There is no one who knows your vehicle better than your dealer. There is no advantage to your dealer to reccomend one over the other, but he has an incentive to give you the right service to maintain you as a customer. There is an official Honda chart that you can ask to see, that will show you what Honda reccomends for your vehicle. I think you will find that your dealer is providing the correct weight of oil for your Accord.
Howard
>>> Dear Experts, >>> [quoted text clipped - 13 lines] >>> >>> EZ John Horner - 06 Jan 2006 06:30 GMT >>for the right price i would use the more advanced motor oil 5w-20. more >>than likely it is a better oil for your car. your owners manual was [quoted text clipped - 7 lines] > as oils improve they become better for your vehicle even though they may be > a different weight. Certainly I would use the latest SM / GF-4 rated oils, but oil quality and oil weight are two different things.
Ford went to considerable trouble to publish service bulletins showing which older models were demonstrated to be compatible with 5W-20 after Ford switched most of their new vehicles to 5W-20. However, I have never seen any similar publication from Honda, which makes one wonder if there are issues with using 5W-20 in Hondas which did not specify it when new.
By the way, Ford stated that the primary reason for using 5W-20 is for improved fuel economy over 5W-30 and bragged about the expected 0.6% improvement. Somehow I don't think any of us would ever be able to detect a less than 1% fuel economy improvement.
John
jim beam - 06 Jan 2006 14:43 GMT >>> for the right price i would use the more advanced motor oil 5w-20. >>> more than likely it is a better oil for your car. your owners manual [quoted text clipped - 25 lines] > > John ford are idiots that don't know what they're doing, or are doing it to cut corners/save money. it's their corporate culture.
karl - 08 Jan 2006 17:20 GMT ============================================================================== TOPIC: 5-20 oil on 98 Accord-I4? http://groups.google.com/group/alt.autos.honda/browse_thread/thread/faa2cc3970410acd ==============================================================================
> Date: Fri, Jan 6 2006 6:43 am > From: jim beam [quoted text clipped - 8 lines] > > > > good and you talk to the dealer and they tell you > > > > its a better oil. than you can use it. 5W-20 oil is not "more advanced" than 10W-30, it's just a different viscosity.
> > > Well said! As oils evolve Honda has changed > > > reccomendations that may differ from your owners > > > manual. The industry specifications continue to > > > change and as oils improve they become better for > > > your vehicle even though they may be a different > > > weight. Stick with the viscosity specified for your car. It is safer to err at a higher viscosity.
> > Certainly I would use the latest SM / GF-4 rated > > oils, but oil quality and oil weight are two [quoted text clipped - 20 lines] > or are doing it to cut corners/save money. it's their > corporate culture. There are idiots, but it's not Ford's engineers who don't know what they are talking. And, they "cut corners/save money" doesn't make sense if they "went to considerable trouble to publish ..."
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karl - 08 Jan 2006 21:08 GMT ============================================================================== TOPIC: 5-20 oil on 98 Accord-I4? http://groups.google.com/group/alt.autos.honda/browse_thread/thread/faa2cc3970410acd ==============================================================================
> Date: Fri, Jan 6 2006 6:43 am > From: jim beam [quoted text clipped - 8 lines] > > > > good and you talk to the dealer and they tell you > > > > its a better oil. than you can use it. 5W-20 oil is not "more advanced" than 10W-30, it's just a different viscosity.
> > > Well said! As oils evolve Honda has changed > > > reccomendations that may differ from your owners > > > manual. The industry specifications continue to > > > change and as oils improve they become better for > > > your vehicle even though they may be a different > > > weight. Stick with the viscosity specified for your car. It is safer to err at a higher viscosity.
> > Certainly I would use the latest SM / GF-4 rated > > oils, but oil quality and oil weight are two [quoted text clipped - 20 lines] > or are doing it to cut corners/save money. it's their > corporate culture. There are idiots, but it's not Ford's engineers who don't know what they are talking. And, they "cut corners/save money" doesn't make sense if they "went to considerable trouble to publish ..."
karl - 09 Jan 2006 02:52 GMT ============================================================================== TOPIC: 5-20 oil on 98 Accord-I4? http://groups.google.com/group/alt.autos.honda/browse_thread/thread/faa2cc3970410acd ==============================================================================
> Date: Fri, Jan 6 2006 6:43 am > From: jim beam [quoted text clipped - 8 lines] > > > > good and you talk to the dealer and they tell you > > > > its a better oil. than you can use it. 5W-20 oil is not "more advanced" than 10W-30, it's just a different viscosity.
> > > Well said! As oils evolve Honda has changed > > > reccomendations that may differ from your owners > > > manual. The industry specifications continue to > > > change and as oils improve they become better for > > > your vehicle even though they may be a different > > > weight. Stick with the viscosity specified for your car. It is safer to err at a higher viscosity.
> > Certainly I would use the latest SM / GF-4 rated > > oils, but oil quality and oil weight are two [quoted text clipped - 20 lines] > or are doing it to cut corners/save money. it's their > corporate culture. There are idiots, but it's not them who don't know what they are talking. And, "[they] cut corners/save money" doesn't make sense if "[they] went to considerable trouble to publish ...]"
karl - 09 Jan 2006 02:58 GMT ============================================================================== TOPIC: 5-20 oil on 98 Accord-I4? http://groups.google.com/group/alt.autos.honda/browse_thread/thread/faa2cc3970410acd ==============================================================================
> Date: Fri, Jan 6 2006 6:43 am > From: jim beam [quoted text clipped - 8 lines] > > > > good and you talk to the dealer and they tell you > > > > its a better oil. than you can use it. 5W-20 oil is not "more advanced" than 10W-30, it's just a different viscosity.
> > > Well said! As oils evolve Honda has changed > > > reccomendations that may differ from your owners > > > manual. The industry specifications continue to > > > change and as oils improve they become better for > > > your vehicle even though they may be a different > > > weight. Stick with the viscosity specified for your car. It is safer to err at a higher viscosity.
> > Certainly I would use the latest SM / GF-4 rated > > oils, but oil quality and oil weight are two [quoted text clipped - 20 lines] > or are doing it to cut corners/save money. it's their > corporate culture. There are idiots, but it's not Ford's engineers who don't know what they are talking. And, they "cut corners/save money" doesn't make sense if they "went to considerable trouble to publish ..."
karl - 09 Jan 2006 03:41 GMT ============================================================================== TOPIC: 5-20 oil on 98 Accord-I4? http://groups.google.com/group/alt.autos.honda/browse_thread/thread/faa2cc3970410acd ==============================================================================
> Date: Fri, Jan 6 2006 6:43 am > From: jim beam [quoted text clipped - 8 lines] > > > > good and you talk to the dealer and they tell you > > > > its a better oil. than you can use it. 5W-20 oil is not "more advanced" than 10W-30, it's just a different viscosity.
> > > Well said! As oils evolve Honda has changed > > > reccomendations that may differ from your owners > > > manual. The industry specifications continue to > > > change and as oils improve they become better for > > > your vehicle even though they may be a different > > > weight. Stick with the viscosity specified for your car. It is safer to err at a higher viscosity.
> > Certainly I would use the latest SM / GF-4 rated > > oils, but oil quality and oil weight are two [quoted text clipped - 20 lines] > or are doing it to cut corners/save money. it's their > corporate culture. There are idiots, but it's not them who don't know what they are talking. And, "[they] cut corners/save money" doesn't make sense if "[they] went to considerable trouble to publish ...]"
jim beam - 09 Jan 2006 14:19 GMT > ============================================================================== > TOPIC: 5-20 oil on 98 Accord-I4? [quoted text clipped - 56 lines] > doesn't make sense if "[they] went to considerable > trouble to publish ...]" so, do you know much about cars? do you know about 3 vs. 5 bearing crankshafts? do you know about cast cranks vs. forged? do you know about high silica brake pads? transmission clutch pack quality? how about tolerances? suv rollover? solid rear axles straight out of the 20's? leaf springs? red rear turn signals to save 2 bulbs and a few yards of wire? dude, no kidding, there's not a single nut, bolt, strand of wire, or even paint particle on a ford that is not the cheapest they think they can get away with. not one single thing.
L Alpert - 10 Jan 2006 01:53 GMT >> ============================================================================== >> TOPIC: 5-20 oil on 98 Accord-I4? [quoted text clipped - 65 lines] > strand of wire, or even paint particle on a ford that is not the > cheapest they think they can get away with. not one single thing. It's called "meeting the minimum specification".......
jim beam - 10 Jan 2006 02:15 GMT >>>============================================================================== >>>TOPIC: 5-20 oil on 98 Accord-I4? [quoted text clipped - 67 lines] > > It's called "meeting the minimum specification"....... which begs the question, if ford quality is 30% of toyota quality, why isn't ford price 30% of toyota price? [rhetorical]
karl - 10 Jan 2006 02:51 GMT > Date: Mon, Jan 9 2006 6:19 am > From: jim beam [quoted text clipped - 75 lines] > cheapest they think they can get away with. not one > single thing. No, jim, I do not know much about cars. Why do you ask? Your question has no bearing on the issue at hand. The issue is substituting 5W-20 for 10W-30. Do you have anything useful to add? And, jim, I do keep my mouth shut on matters I do not understand. How about you?
jim beam - 10 Jan 2006 03:12 GMT >>Date: Mon, Jan 9 2006 6:19 am >>From: jim beam [quoted text clipped - 83 lines] > And, jim, I do keep my mouth shut on matters I do not > understand. How about you? so why are you defending ford, contrary to any reason for anyone that's examined their design, production technology and quality?
karl - 10 Jan 2006 07:51 GMT > Date: Mon, Jan 9 2006 7:12 pm > From: jim beam [quoted text clipped - 15 lines] > >>>>Date: Fri, Jan 6 2006 6:43 am > >>>>From: jim beam snip
> >>>>>Ford went to considerable trouble to publish > >>>>>service bulletins showing which older models were [quoted text clipped - 4 lines] > >>>>>issues with using 5W-20 in Hondas which did not > >>>>>specify it when new. snip
> >>>>>John > >>>> [quoted text clipped - 30 lines] > for anyone that's examined their design, production > technology and quality? Here we go again. When you have nothing useful to say about the sugject at hand you talk about something else. You do this frequently. Jim, you don't have to post; relax.
Ford did the right thing, they published, according to John, which of their older models can savely be switched to 5W-20. But you call them idiots.
jim beam - 10 Jan 2006 14:17 GMT >>Date: Mon, Jan 9 2006 7:12 pm >>From: jim beam [quoted text clipped - 74 lines] > John, which of their older models can savely be switched > to 5W-20. But you call them idiots. ford also published that it's ok to leave the brake fluid for the life of the vehicle. is that ok just because ford say so? nhtsa don't seem to think so.
the point is karl, since you seem to be /so/ interested, that ford quality is poor. the slightest problem with a 5w-20 oil in a poor, low tolerance, minimal material quality ford motor /will/ result in a shortened engine lifespan. and ford say that's "ok", using the same [economic] rationale that justifies not changing the brake fluid, i.e., it's out of warranty and the consumer pays. if that's ok with you, good luck to you.
Grumpy AuContraire - 06 Jan 2006 18:39 GMT > >>for the right price i would use the more advanced motor oil 5w-20. more > >>than likely it is a better oil for your car. your owners manual was [quoted text clipped - 24 lines] > > John You bring up an interesting point regarding the use of "lighter" engine oils as relates to mileage goals.
The question in my mind is, "Are the current materials used in engine internal parts such as pistons, valves, crankshafts, engine blocks, camshafts etc. substantially the same as say an early 1980's Honda?"
JT
Grahame - 07 Jan 2006 00:01 GMT My 2001 owners manual says "5W-20 oil is formulated for year-round protection of your Honda, to improve cold weather starting, and to help your engine use less fuel". Is Honda only concerned about cold weather? What about extreme hot weather? Does a 5W-20, 5W-30 or 5W-40 not have the same cold weather protection? I would prefer hot weather protection also. I think the main reason for recommending this oil is as stated to "use LESS FUEL". Any comments?
> for the right price i would use the more advanced motor oil 5w-20. more than > likely it is a better oil for your car. your owners manual was written [quoted text clipped - 24 lines] > >> > >> EZ
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