Quote:
Originally Posted by BrianG
Royal Purple, eh? Intrigued, I did a little more reading and it seems to be legitimate, unlike those "vortex" things people stick in their intakes to boost power. I might give it a try next time if my oil-changing place carries it (hate changing my own oil; it's messy and a PITA). Gas prices aren't astronomical right now, but every little bit helps...
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In my smaller engine cars I didn't notice any increase in mpg, but the engines are a wholelotta smoother and tranny shifts smoother as well. My dragrace buddies at work see a HP increase at the wheels on their 500+HP cars. You do have to use it in the engine, tranny and diff to see max increase.
On my expedition(5.4L 300HP) I started to see the increase in MPG after 1500 miles on a roadtrip to South Florida. Avg 17.6MPG@77MPH (cruise control). The beast took 7 quarts of 5W-20. With oil filter cost was 65 bucks at local Pennzoil oilchange shop.
You can't beat 12000miles oil changes
