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Car Forum / Driving, Maintenance, Tuning / General Car Topics / September 2007is it ok to interchange synthetic oils (mobil-1, penzoil platinum)
I know its bad practice to mix synthetic with conventional oil. However, is it ok to interchange different brands of synthetic? For example, one oil change I may want to use Mobil-1, the next Penzoil platinum. Especially when I am on the road often and may be able to find only one, not another at any one instance. On Sep 1, 3:32 pm, piclist...@yahoo.com wrote: > I know its bad practice to mix synthetic with conventional oil. Who told you this and where is the proof? Ever hear of a synthetic blend? The public has been duped into thinking that synthetic oil is the magic elixer and that conventional oil is worthless. In reality, synthetic oil MAY be better than conventional oil, but the in last 10 years conventional oil has made significant improvements. BTW, the "synthetic" term may be misleading. Conventional oil can be called synthetic if the refiner plays with the molecules a little bit. There are big differences in the way synthetic oil is manufactured. I wouldn't worry about using different brands of oil from one oil change to the next and I've got a 300K+ miled car to prove it. Kruse <kruse@kansas.net> wrote in article <1188676413.289899.299650@r34g2000hsd.googlegroups.com>... > On Sep 1, 3:32 pm, piclist...@yahoo.com wrote: > > I know its bad practice to mix synthetic with conventional oil. [quoted text clipped - 10 lines] > I wouldn't worry about using different brands of oil from one oil > change to the next and I've got a 300K+ miled car to prove it. Since there is a lot of belief (urban myths, old wives' tales, etc.) out there concerning the non-mixing capabilities of different oils, I believe now is the perfect time for some enterprising scammer to come up with a new snake oil additive that "facilitates" the mixing of synthetics and conventional oils. I'm surprised it hasn't already happened. What shall we call it? "Synth-a-sizer"? "Truemix"? "Oil-adjuster"? "Moleculer Moly"? On Sep 1, 12:32 pm, piclist...@yahoo.com wrote: > I know its bad practice to mix synthetic with conventional oil. > However, is it ok to interchange different brands of synthetic? For > example, one oil change I may want to use Mobil-1, the next Penzoil > platinum. Especially when I am on the road often and may be able to > find only one, not another at any one instance. yeah, totally safe. try to remember your orig. viscosity and roughly match that. even if you can't, it's still better than running low oil levels. > I know its bad practice to mix synthetic with conventional oil. Why? True, you don't get the whole extended life of the synthetic once you've mixed in conventional, but there's no harmful interaction. Synthetic oils specifically state that they mix with conventional oils just fine. > However, is it ok to interchange different brands of synthetic? For > example, one oil change I may want to use Mobil-1, the next Penzoil > platinum. Especially when I am on the road often and may be able to > find only one, not another at any one instance. No harm whatsoever, provided both brands are equal in quality. Some might argue that alternating additive packages might provide some added margin of protection, but I doubt that. |
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