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Car Forum / Ford / Ford Trucks / September 2005Fuel Grade for F250 V10
Is there a recommended Octane level or fuel grade that I should be using in an 02 F250 SD V10? Or does it not matter? >Is there a recommended Octane level or fuel grade that I should be >using in an 02 F250 SD V10? Or does it not matter? Use what's printed on the inside of the filler door. 87 octane is what I ran in mine before I chipped it and did intake/exhaust mods at 15k.. Higher octane won't do jack for performance on a stock engine. It WILL suck money out of your wallet at a faster rate tho. On the other hand, at todays prices, a few cents more for 91 doesn't hurt the wallet that much more. You'd think they'd throw in some vaseline, though. Had to gas up 2 vehicles yesterday. Grand total gas purchase $126. Ouch. >>Is there a recommended Octane level or fuel grade that I should be >>using in an 02 F250 SD V10? Or does it not matter? [quoted text clipped - 5 lines] > Higher octane won't do jack for performance on a stock engine. It > WILL suck money out of your wallet at a faster rate tho. This is a good point about higher octane being "relatively cheaper" now - instead of the 10 cent increase for high test reflecting say an 8 percent increase in gas cost, its now more like a 3 percent increase. Interestingly, I heard a news report that said consumers are buying less of higher octane gas, and more low octane, with the price increases. And, if you want to cry for me, I literally coasted into a gas station the other day with my F350 super duty (gas gauge read 1/4 tank but it was off - any way to adjust this?) and filled up with 35 plus gallons of gas for about $105.00! Even the gas attendant was breathless. John > On the other hand, at todays prices, a few cents more for 91 doesn't hurt > the wallet that much more. You'd think they'd throw in some vaseline, [quoted text clipped - 11 lines] > > Higher octane won't do jack for performance on a stock engine. It > > WILL suck money out of your wallet at a faster rate tho. >you want to cry for me, I literally coasted into a gas station the other day >with my F350 super duty (gas gauge read 1/4 tank but it was off - any way to >adjust this?) and filled up with 35 plus gallons of gas for about $105.00! >Even the gas attendant was breathless. > >John Ouch! I'm not driving my truck much right now, but since I was out and about in it the other day, I stopped at 7-11 and put $15 in it. The needle on the gauge barely moved. While I felt pretty silly only putting 5 gallons in it, I had to laugh when I pulled up to the pump and saw the last person there had put $5 worth in their tank. Oh, and I've never used anything other than 87 octane in my truck and see no reason to switch now. Matt 99 V-10 Super Duty, Super Cab 4x4 Hey Matt - you have the same model and truck I have. Mine is a dually with a dump bed on it. What is your mileage? I'm getting 5 MPG, but I am doing short hauls with heavy loads. Also, I've only had this truck for a few months and although I went through the brake system, the brakes seem to require an extraordinary amount of pressure when braking hard. What is yours like? Thanks John > >you want to cry for me, I literally coasted into a gas station the other day > >with my F350 super duty (gas gauge read 1/4 tank but it was off - any way to [quoted text clipped - 14 lines] > Matt > 99 V-10 Super Duty, Super Cab 4x4 >Oh, and I’ve never used anything other than 87 octane in my >truck and >see no reason to switch now. > >Matt >99 V-10 Super Duty, Super Cab 4x4 Except maybe more power and better MPG. Do not knock it until you try it and given the even plus is only about 3% more at todays fuel prices why cut corners and use the cheapest gas possible? >>Oh, and Ive never used anything other than 87 octane in my >>truck and [quoted text clipped - 6 lines] >it and given the even plus is only about 3% more at todays fuel prices >why cut corners and use the cheapest gas possible? From past comparisons, I'm already getting about the best mileage of anyone on here with a V-10. I'm good, thanks. Matt 99 V-10 Super Duty, Super Cab 4x4 >On the other hand, at todays prices, a few cents more for 91 doesn't hurt >the wallet that much more. You'd think they'd throw in some vaseline, >though. > >Had to gas up 2 vehicles yesterday. Grand total gas purchase $126. Ouch. Filled up the 350 yesterday with 91 octane. $108.. Ouch! Even the bike now costs double digits to fill... Gas was $1.07 when I bought my truck in '01. It's more than tripled in 4 years.. Bro-in-law got back from Iraq a few weeks ago. He said gas sells for about a nickel a gallon oer there.. Must be nice... > Gas was $1.07 when I bought my truck in '01. It's more than tripled > in 4 years.. > > Bro-in-law got back from Iraq a few weeks ago. He said gas sells for > about a nickel a gallon oer there.. Must be nice... Yeah, but I wonder what a gallon of Jack Daniel's Black would cost 'em? Razor >Gas was $1.07 when I bought my truck in '01. It's more than tripled >in 4 years.. Yeah, ain't that a bitch! Shortly after I bought my truck, gas hit a low of under $1 a gallon in N. Mass. In fact, a town I commuted through was having a gas war and it hung down around 89 cents for a month or two. Back then, I didn't mind my 65 mile a day commute in it. Luckily things have changed and I don't need the truck as a daily driver and I have no commute. I'd be really crying if I did. Matt 99 V-10 Super Duty, Super Cab 4x4 >>Gas was $1.07 when I bought my truck in '01. It's more than tripled >>in 4 years.. [quoted text clipped - 4 lines] >month or two. Back then, I didn't mind my 65 mile a day commute in >it. I was doing about 45 miles each way in my truck for about 2 years. Cost more to feed the beast than the monthly payments were... >Luckily things have changed and I don't need the truck as a daily >driver and I have no commute. I'd be really crying if I did. Thankfully I work about a mile and a half from home so if it's a nice day, I'll walk. Unless I've got a lot of stuff to haul or kids to tote around, I ride the bike everywhere.. >Is there a recommended Octane level or fuel grade that I should be >using in an 02 F250 SD V10? Or does it not matter? This one it a hot potatoe. Octane requirement of a engine is not constant, it varies with engine and air temp and altitude. If you just plug around and do not tow, you "might" get by on 87 okay except in really hot weather. Just because you do not hear the knock, it does not mean that it is not and that the computer is not retatrding spark which effects power and MPG. Run few tank of plus through it and see how it runs power. responce and MPG wise compared to 87 and if you tow heavy, it would be 89 min in my book for best power. Myself I have used 89 or better in my trucks for over 10 years now and I can tell a difference especailly towing on a hot day. I can maintain 70 on a long highway grade with a 7500 lb trailer in drive with a a std cab 2000 K3500 with 4.10’s, stock tires and a 5.7 without any real effort with it 95 plus and A/C on too running 93 octane. THere are those that will swear by 87 even though they are losing power on MPG at times because a modern engine will not runs it on a warm day without some timing trickery by ECM and everytime you retard spark to control knock, you loose MPG and power plain and simple. Been using 87 Octane since day one and pulling a 14,000 lb 5th wheel. No problems at all. A Banks Power Pac is installed. You can experiment with higher Octane's and draw your own conclusions. But, you are OK with 87. '99 F350 CC 4x4 V10. : Is there a recommended Octane level or fuel grade that I should be : using in an 02 F250 SD V10? Or does it not matter? >You can experiment with higher Octane’s and draw your own >conclusions. >But, you are OK with 87. Experimenting is a good idea but to say nothing is gained and that 87 is fine is kinda foolish. EVERY car I have bought in the last 16 years runs noticably better with 89 or better gas, every one of them. If I want to run 87 it will be in old lowered compression vehicle, not a newer one with 9 to 1 compression or more because you are lossing power every time your ECM retards the spark and it will with 87 under a heavy load and on a warm day. Bullshit. It's kinda FOOLISH to waste your money on more expensive fuel that does absolutely NOTHING for you except cost you more money. What the hell is "runs noticeably better"? Do you actually understand what a fuel octane rating is and what it means in real world application? The only way you could possibly see any benefit whatsoever from higher octane fuel is if you had a high enough compression ratio to cause PRE IGNITION with the lower 87 octane fuel. All most no cars or trucks today do. And Fords 9.2/1 compression ratio V-10 does not require high(er) octane fuel. To bad you are off in Usenet land, because if it were feasible, I would bet you the title to your car against it's value in cash, that on a dyno there would BE ABSOLUTELY NO BENEFIT from using a higher octane fuel over the base 87 octane. Do you use deer whistles too? >>You can experiment with higher Octane's and draw your own >>conclusions. [quoted text clipped - 7 lines] > power every time your ECM retards the spark and it will with 87 under > a heavy load and on a warm day. >>You can experiment with higher Octane's and draw your own >>conclusions. [quoted text clipped - 7 lines] > power every time your ECM retards the spark and it will with 87 under > a heavy load and on a warm day. I used to run 89 in my cars because I was getting better mileage, more power, etc., until I bought my 2002 Escape. I had a '89 Probe and a 2000 Eclipse that both got better mileage with 89, and I had the mileage documentation to prove it. They were both 4 cylinders. Then I bought the Escape (V6) and tried 89 in it for the first year or so. Then one day I stopped at my usual watering hole and they were out of 89, so I put in 87. Didn't notice any difference in power or performance after the first tankful, so I tried another. Same mileage as the 89, but cheaper. I've been running 87 ever since. I don't do a lot of heavy loads, but it's hot here 9 months out of the year, and I've noticed no degradation in performance or mileage. I'm not saying 87 or 89 or even 93 octane is right for everyone because blanket statements ARE kinda foolish, but it doesn't hurt to try different grades and manufacturers to see what's best for you. SC Tom |
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