I never could find it.
LOL, maybequote:
Originally posted by Blue_Goose:
Are you sure you didn't clean them out of it and not telling us?![]()
Goose![]()
I'm with Accord on this. For a good bit of the operation, they look the same to the engine ..just not at the same time in the warm up process.quote:
Originally posted by 06RANGER:
Would it be a bad idea to run PP 5w-30 when the manual calls for 5w-20?
I'll have to disagree with this since the "core" engine parts that aren't cooled by the water jacket warm up more than the exterior parts like the block. This temperature differential partially takes up the clearances to compensate for the thinning of the oil. So 5W-30 will be wrong for a 5W-20 engine under most all operating conditions.quote:
Originally posted by Gary Allan:
For a good bit of the operation, they look the same to the engine ..just not at the same time in the warm up process.
I'm saying that the engine will be tighter at 200F than at 180F, so the 5W-20 at 180F will work better in the engine than the 5W-30 at 200F if the engine is indeed designed for 5W-20.quote:
Originally posted by Gary Allan:
Do you think that every engine of this make never sees both (either) 180F-200F temp with both 5w-30 and 5w-20 AT SOME POINT???
How can you say this when the exact same engine can have both oil temps at full warmup depending on their usage at the time? Highway 220F ...stop and go 185F. It's a function of combustion cycles per minute and the ability of the oil to reject heat in losses via the pan (or whatever).quote:
I'm saying that the engine will be tighter at 200F than at 180F
So? It's all relative. It will compensate for one half of a viscity grade even if the span is within a viscosity grade (span the same number of centerstrokes). Your point?quote:
Also for example, if the main bearing journal effectively runs 30F hotter than the main bearing bore in summer vs. winter, the clearance will close by about 5/10000" for a 2.5" pin. This will compensate for half a viscosity grade right there.