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
So what I'm gathering is, I should play it safe, return it and get 5w-30.
^
i think so
Well, 5w-30 is what I've always used it in, so no point in changing.
i run RP 5w-30 in everything i have.. next oil change for the wagon, thats whats going in it.. if i ever drive the darn thing again..
sorry to jack your thread but is royal purple worth the $$$$?, i just bought a case of valvoline vr1 racing synthetic and im having second
thoughts about it
RP used to be the best of the best. Last oil report i bothered reading (about a year ago) RP was 3rd. Amsoil #1, Mobil #2. The rest of my family runs amsoil, it seems to burn off faster. Brothers car went through 3 quarts in about 3 months. I topped it off with my mobil 0-30, he hasn't lost a drop since.
Race motors arent usually tighter than a stock motor. If anything, they run more clearance and use heavier oils. Not trying to start an argument, just sayinQuote:
Originally Posted by 6.0vortecchevy
Ah i miss the good old days of rotella now its got so much detergents in it im afraid to run it in my diesel, so thats why i run amsoil nothing is better period
Napa/Pennzoil HD30 or Castrol HD30, kept my rig running great. :)
From what I've read it's not really GMs idea to recommend 5W-30. It's another EPA thing. 0w-30 and 5w-30 use less fuel on startup and has less emmissions on startup, so GM is forced to recommend it. Personally I don't live in a very cold climate, so I don't use it. I usually use 10w-30 or 10w-40.
I run a 0w-30 and have no issues or worries about it. Good for those morning cold starts.