I'm getting +3.1 mpg increase with Royal Purple

[TR3-2001SE]

I guess this is the proper place for this report. My milage went from 26-27 to 29-31 over many tank fulls using Royal Purple. Only problem is I find out it had thined to 20w and the 29-31 where at the end of the 7500 miles on the oil.
Ain't oil analysis wonderful!

 

[pedaltothemetal]

quote:

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Originally posted by TR3-2001SE:
I guess this is the proper place for this report. My milage went from 26-27 to 29-31 over many tank fulls using Royal Purple. Only problem is I find out it had thined to 20w and the 29-31 where at the end of the 7500 miles on the oil.
Ain't oil analysis wonderful!

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You too! Well that certainly will make my claim more credible. Lot of non believers here. I'm running 15w40 diesel RP which has much higher TBN to combat oxidation.

Leo