5W-30 in a car that uses 5W-20?

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I recently "inherited" some free Chevron 5w30, my 2005 GC calls for 5W-20 and I've used it for the last year, since this engine has basically been unchanged forever I should be able to run 5w30 with no issues correct? Thanks
 
I wouldn't hesitate or loose any sleep over it.
Chevron has a good reputation and unless the owners manual specificaly forbids 5w30 there should not be a problem.


My personal opinion is that 5w20 is specified for fuel economy reasons only and otherwise offers no advantage over a similarly formulated 5w30 oil.

Flame suit on.
Scotty...shields to high.

Rickey.
 
Aren't most 20w's right on the edge of being a 30w anyway? it'd be like saying "I'm not going to drive today because it's 10deg colder out and my oil might be too thick"
 
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I would have no problem using free 5w30 in an motor spec'd for 5w-20. Use it with confidence.




DITTO! In fact I just put 10W30 in my wifes Honda which specs 5W20. I would (and do) use 5W20 in the winter.
 
My last OC, I put 5w30 in and at first it felt slightly sluggish but after a week, its just fine. I cant tell any difference. BTW, I mixed all sorts of oils... dino, synth, sl, sm etc.. so yeah.. I am the living proof that mixing and putting slightly higher visc doesnt blow up your engine. If anything it might provide a smoother, quieter ride. Ok dont quote me on the last one.

P.S.: The sticky thread at the top has a chart and you'll see some 10w30 are less thick than some 5w30s out there..
 
I have a friend who bought a Honda Civic a few years back and in her owner's manual it says that 5W30 can be used if 5W20 is not available. Of course for a brand new Honda it might say something different or for a car or truck that is supposed to use 5W20 it may say something different. But that is what her manual said.

As long as 5W30 is not forbidden in the owner's manual and it says that 5W30 can be used I think it would be okay to use 5W30 maybe in the summertime. But actually 5W20 oil may well be better than 5W30, with superior additives.

Personally I always go by what the owner's manual says. I figure the engineers who designed the car or truck know something. In my own car manual (for a Saturn 2003 Ion) it says that 5W30 is preferred and 0W30 can be used in severe cold and 10W30 can be used (warm temperature only) if 5W30 is not available. I have always used 5W30 or 0W30 (in the wintertime) in my car. 5W30 from what I have been able to find out may well be superior to 10W30 and in any case I can use the 10W30 only in the summertime.

If I owned a car or truck where it was aid in the owner' manual only to use 5W20 that is what I would use. If it said 5W20 and 5W30 if 5W20 was not available I would use either 5W20 all the time or maybe 5W30 in the summer (especially in a truck).
 
Apparently from what I've been reading: you'll get superior flow from 5W-20 compared to 5w30 AND much less wear at start-up. As long as you're getting a minimum 10 PSI oil pressure per every 1000 RPM's, you're safe to use the thinner oil.
dunno.gif
 
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I am wondering now if I should try 0w-20 in my Accord.




Why, whats the point of changing out an oil for another brand in such a short time period? I'f your that bored or got that much money to burn,you can send it my way!
 
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