Quote:
Originally Posted by Ecky
Not 0w16 but related: I'm considering running 0w20 in my engine after I run through my stock of 0w30, and could use some opinion.
The K24A2 in my car calls for 5w30 and was never later spec'd
On the other hand, I have an under-driven oil pump (which probably still has pressure limited by the relief spring). I run much more advanced ignition timing (5-7° at WOT), meaning there's more force being applied to rods and bearings. I also do drive spiritedly in short bursts - it's not particularly rare for this engine to bounce off of my rev limiter.
Thoughts? 0w20 probably fine? Even thinner? What would you do?
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In your application I wouldn’t, I would stick with 0w30 (which carries zero risk)
If you put lower spec oil listen to your engine and do a UOA on it.
A single bout of lower spec oil in “normal driving” will sound noisy but likely not cause failure
In my cars where I tested this it made them much noisier.
If you send in a UOA and notice high metals no sense continueing
I would recommend Rotella Gas Truck full synthetic 5w20 if you want to test a 20w, it seems to be on the heavier end of 20w and is more sheer resistant
Even better it’s on clearance many places for $10 a 5q jug