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Can i use a3/b4 in my 14 5.0 coyote?
Can i use a3/b4 rated oil in my 14 5.0 coyote?
- Thread starter Str8ripper1776
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Sure, what makes you think you couldn't?
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I didnt know what the rating was, i am using c3 rated right now and im switching to a3/b4 because i hear the c3 isn't as good for gas engines
All things considered, C3 and A3/B4 oils are quite similar in their performance. Just one uses an additive package that doesn't leave ash behind when burned.
that's not true, they leave about 2/3rds of the ash behind of the other one.
Which makes you question the entire 'SAPS' thing entirely. Is it really required?
Ford and Volvo were using high SAPS oils with DPF's for years with next to no issues. Why in 2015 did they suddenly decide they needed them?
not just ford and volvo, PSA aswell. And, I did too on my FCA diesel.
I think they did it to force the use of higher quality base stocks, you can use a full saps additive package on lesser quality base stocks, but not low or mid saps, it just wont do the miles or pass testing. Of course, you could do full saps with the same high quality base stocks, those are worth seeking out imo.
Lower hthts put less loud/stress on the engine, for example, my hilux blow less sot on lower hths oils vs higher hths oils on smog test. q
I don't believe that.
Higher HTHS may cause slightly more drag, but it's negligible.
Regardless, we were talking about SAPS, not viscosity.
One of the several spurious “reasons” why lower HT/HS oils are better.
I would say, maybe... higher viscosity oils contain heavier base oil or more polymers. if that gets flung into the combustion chamber, it might not burn cleanly in a diesel due to the droplet size and access to oxygen.
But that would mean the engine is likely an oil burner.
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