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Need Expert Help With Unusual C5 Oil Issues

ernestD

Well-known member
Joined
Jul 23, 2009
Messages
305
Location
naples fl.
Corvette
2002 electron blue coupe
I have used Mobil 1 and gm blue filters on my 02 for most of its life so far.Once I used mobil 1 filters and K-N filters never any issues.One time I tryed Royal Purple oil. I saw in a corvette magazine one time a test of oils.Mobil 1 vs Royal Purple.They Dyno'd both before and after.Royal won.They showed a graph where Royal gained 5 more horsepower!If the horsepower isn't there how does oil create it?Just :ughasking
 

timfitz63

Well-known member
Joined
May 15, 2010
Messages
1,146
Location
Pittsburgh / South & Centrl TX
Corvette
'98 Aztec Gold Coupe; '04 Millennium Yellow 'Vert'
... They showed a graph where Royal gained 5 more horsepower!If the horsepower isn't there how does oil create it?Just :ughasking

Well, I would surmise, if that's an accurate finding (5 Hp gain using Royal Purple vs. Mobil 1), that the engine is producing less friction as a result of better lubrication, which translates into less loss (in the form of heat) and more horsepower.
 

froggy47

Well-known member
Joined
Oct 24, 2002
Messages
1,000
Location
CA
Corvette
Black 1996 LT4 Coupe/ 2004 Z06/Z16
Some good info on viscosity vs. oil temps,

Joe Gibbs Driven - Training Center

Please disregard this post if your mind is already made up regarding your oil choice.

If your car is only street driven, or does occasional parade laps, don't worry about your oil.

Anyone else, learn.

:thumb
 

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