Quote:
Originally Posted by BlueRidge77
This. I changed my oil over to 5w30 and the engine has never sounded better. Smooth! Less Toyota tick and valve train noise. Should have done that a while back. Just changed the rear diff to 75w90 (GL-5) and will do the front soon. (Rear diff fluid looked extremely good and golden even at 68k miles) Transfer case I’m still thinking about. Not sure yet and I don’t need to change it yet either…
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So... I can totally buy this, but I'm just wondering about the fuel mileage. Notice it drop a little with the change in oil? If it's CAFE driven, I'd think it would affect it some.
The only time I've seen a viscosity problem was years ago, on a CAT C9 engine in a fire truck, below freezing weather the 15w40 (typical diesel) oil was too thick for the fuel pump (if I remember correctly, or fuel injector?) and it gave a no-start condition until the oil was changed out to 5w30 diesel grade that was spec'd.
And if it solves that wonderful ticking noise, I'm on board. I'm so going to miss that sound...
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1992 3.0 Auto - First Project -Sold-
1995 3.0 Manual - Second Project - Sold-
2018 TRD ORP Barcelona Red
