True, some testing was done (on different engines obviously) on Bob is the Oil Guy and 2% hp difference given the kind of 2 level changes in viscosity we're talking about (10w-60 to 0w-40). Wouldn't be surprised if worth 5-8 bhp on our cars.
Quote:
Originally Posted by Mr. 5
There's horse power in oil. We're not talking crazy amounts, but enough to win a race or not.
My 60-130s were slower with the 5w40 given close to the same temp, humidity, etc.
I also noticed higher oil temps (+10 degrees) when compared to the 5w30.
I'm assuming that the thicker oil was slowing down flow going through the cooler. Just an assumption.
I'm no oil expert, but as far as the high antiwear properties, I believe that the Mobil1 TD 5w40 would be a contender in oil substitutions for the S65.
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