Contour Enthusiasts Group Archives Forums Modifications Duratec Maintenance Motor oil sale

Originally posted by mr_froge:

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Originally posted by Roz 1999 SVT-C:

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Originally posted by chill1110:

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Why no Royal Purple fans out there...this oil seems to be better on the overall performance of the car over Mobil 1. Royal is more expensive tho.

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I have used Mobil 1 for years in all of my modified vehicals....on the ones i have had the chance to tear down, i saw almost no wear on the motor...bearings, pistonwalls, cranks, rods, cams....And the inside was clean (oil changes ever 3 months or 4000 miles).

The reason i stick with it is becasue the proof above is good enough for me. Im not saying Royal Purple is not good...all im saying is that im sticking with what has worked for me...And thats way im suggesting people to using it...Mobil 1 has personaly, made me a believer in there product.
Lupe

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And until just the last year, Mobil 1 was only a synthetic blend. The problem with a synthetic blend is the difficulty in controlling the base stock and producing a reliable oil that has consistent performance.. But hey, that was better than some others I can think of..

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http://neptune.spacebears.com/cars/stories/oil-life.html

Yeah, still good enough to outperform amsoil in a controlled test. Amsoil's up to the visosity of a 40 wt (almost 50!!) with a 16% drop in avg fuel economy.

"We've noted about about a 17% drop in fuel economy and we're curious to see whether we pick that back up with the next brand of oil.

The results continued Amsoil's trend of excellent contamination control -- wear metals are low, insolubles are still under control (remember, by this time Mobil 1 got its oil filter changed from too many insolubles), if only viscosity weren't so high! This stuff, which says 5W30 on the bottle, is now a middle 40 and is oozing its way toward 50! Bad news for engines that prefer thinner oil. Any connection to the fuel economy drop?"

Results for insoluables may be confounded as mobil 1 was in during the break in period:

"Frankly, with the viscosity/TBN issues, we are suspicious that Amsoil's wear metals are simply a byproduct of an older engine. A re-test with Mobil 1 is probably in order."