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YOUR RESEARCHan education in "synthetic" motor oil
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Use mobil1 0w-40 now
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I've used that on my previous car, but used Mobil1 0W-40 now because it's cheaper and I change it every 5K miles.
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Suggestion
if you're changing every 5k, you can get away with regular oil, though I don't know if you'll find a non-synthetic 0W-40.
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Suggestion
Mobil took Castrol to court when Castrol stopped using synthetic base for their 'synthetic' oils.
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so i learned, on another car board, that mobil 1 and any other API group III based oils, can only market their product as 100% synthetic in the u.s.
everywhere else it's considered a blend. only oils made from API group IV base stock is truly synthetic.
it doesn't have anything to do with performance, etc. but it was new information for a motor oil newbie like myself.
Mobil took Castrol to court when Castrol stopped using synthetic base for their 'synthetic' oils.
Despite the obvious rip-off from Castrol, Mobil lost the case, basically because of semantics.
That's where the 'confusion' comes in - basically Mobil is synthetic, Castrol is not, but is processed as a synthetic (and priced as a synthetic!)
Make your own choices - I'm a Mobil man.
Slightly off-topic but related nonetheless: what makes an oil "synthetic"? It's all made from crude oil pulled from underground. Is it just a matter of more processing?
I wonder why people believe that "fully" synthetic oil is better than all other oils? Must be that they are a sucker for marketing hype? There sure are no studies that show it to be true.
The technical advantages of synthetic motor oils include:
Measurably better low and high temperature viscosity performance
Better chemical & shear stability
Decreased evaporative loss
Resistance to oxidation, thermal breakdown and oil sludge problems
Extended drain intervals with the environmental benefit of less oil waste
Improved fuel economy in certain engine configurations
Better lubrication on cold starts
As for the 'synthetic is no better than dino oil' pitch...
Yep, and the Earth is flat, and Big Foot is in a freezer after being found by an ex duty cop and his buddies...
