I was getting oil today and saw Mobil 1 has a 0w-30 synthetic. It says it replaces 5w-30 and 10w-30 while improving fuel economy. Is there really an advantage to using this over 5w-30 and would it be safe?
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I was getting oil today and saw Mobil 1 has a 0w-30 synthetic. It says it replaces 5w-30 and 10w-30 while improving fuel economy. Is there really an advantage to using this over 5w-30 and would it be safe?
Sounds like another marketing scam to me. I'd stick to the 5W-30 which chevy reccomends.
I use it in the winter, it stays pretty thin at -70F. Can't say that of the 15w40 my old roommate had to spoon feed his Jeep 4.0L. Definitely helps on startup, what the numbers mean is that it acts like a cold 0 weight when its cold, then takes on the characteristics of a hot 30 weight when it gets warm. I see little reason that it would benefit you in terms of mileage, as once it gets to operating temp it should, in theory act the same as any 30w syn.
Is it safe? I've never had any problems with it. Although I do worry about it not having the best shear protection when its cold.
I've been using it for almost 2 years. Before I used to have to let vehicle warm up for over a minute to avoid the 'piston slap' chatter. Now, it goes away within 10 seconds. I use it year round, never had any problems/complaints. I like it alot better then the valvoline synthetic 5-30 I used to use.
I guess its good if you like putting water in your motor. I use 20-50.
Not good for tight tollerences of LS based motors.Quote:
Originally Posted by 6.0vortecchevy
I dont know if i agree with that since race motor are built to the tightest terrence running 20-50. And looking at a spec sheet i wouldn't say there really tight.
the numbers have to do with heat tolerances. my motor rarely if ever sees 200*, so 0-30 is more then enough. If you were running a turbo/nitrous/etc and saw temps above 220* on a regular basis, i'd run heavier oil. On a n/a motor, there is no reason to run thicker oil...you're just hurting things when it's cold from lack of lubrication.
A little birdy once told me all synthetics are the same weight. Said it was a marketing deal to cover most applications. I wouldn't get 20-50 no where near a stock bottom end ls motor. Bearing clearances are way to tight for that thick of a oil. GM doesn't suggest light weight oil for nothing.
I run 15-40 with 0.003 clearances, those are double what stock is. And its still a little thick for that....
no thanks ill stick to mobil1 5-30 and the famous royal purple 5-30 haha