royal purple
Re: royal purple
Originally posted by henock
I saw a camaro gain about 10-14hp from royal purple oil, tranny fluid, and differential fluid on TV on one of those tuning shows. WOuld this be accurate and would it actually help performance on maxes?
I saw a camaro gain about 10-14hp from royal purple oil, tranny fluid, and differential fluid on TV on one of those tuning shows. WOuld this be accurate and would it actually help performance on maxes?
Donating Maxima.org Member
Joined: Dec 2001
Posts: 325
synthetic oils do have a lower friction coefficient, and it will translate to a little power at the ground...but that claim sounds pretty high....i would believe 6-8 on a 300Hp camaro.
For a few years I did gear box design on heavy trucks. We would do life testing with petroleum based and synthetic oils. Synthetic would run 8-10% cooler (we are talking 600 Hp and 20000 Ft-lb gear boxes) and generated less wear....life was not impacted in our tests as gear teeth would fail first...We did extend oil change intervals with customers that used synthetic because oil contamination and breakdown were decreased. Our testing did not measure HP "losses"...which in this case is mostly a factor of gear design.
When I was still motorcycle racing we dyno'd oils against each other and AMSoil, Redline, Bel-Ray had gains of approx 2% over say Kendal or Castrol GTX...but in a motorcycle, the oil is shared by the gear box as well. It was noticable how much longer a synthetic would hold up than "conventional" oil given that gear box action and clutch feel were both impacted.
engine oil is a different set of criteria than gear boxes...you have contamination from the combustion process (that gets worse with age/ring wear) as the main reason to change your oil...especially if you just make short trips where the engine doesn't get up to temp for a long period to burn off those contaminants....you'll have to make your own decision about extended drain intervals on your engine.
when I was racing i would spend the money on synthetic....it was cheaper than rebuilds. but i don't in my daily drivers (not the engine anyway, transmission and axles yes). If I ever buy a new car, I might get on the amsoil program from the start...we'll see.
For a few years I did gear box design on heavy trucks. We would do life testing with petroleum based and synthetic oils. Synthetic would run 8-10% cooler (we are talking 600 Hp and 20000 Ft-lb gear boxes) and generated less wear....life was not impacted in our tests as gear teeth would fail first...We did extend oil change intervals with customers that used synthetic because oil contamination and breakdown were decreased. Our testing did not measure HP "losses"...which in this case is mostly a factor of gear design.
When I was still motorcycle racing we dyno'd oils against each other and AMSoil, Redline, Bel-Ray had gains of approx 2% over say Kendal or Castrol GTX...but in a motorcycle, the oil is shared by the gear box as well. It was noticable how much longer a synthetic would hold up than "conventional" oil given that gear box action and clutch feel were both impacted.
engine oil is a different set of criteria than gear boxes...you have contamination from the combustion process (that gets worse with age/ring wear) as the main reason to change your oil...especially if you just make short trips where the engine doesn't get up to temp for a long period to burn off those contaminants....you'll have to make your own decision about extended drain intervals on your engine.
when I was racing i would spend the money on synthetic....it was cheaper than rebuilds. but i don't in my daily drivers (not the engine anyway, transmission and axles yes). If I ever buy a new car, I might get on the amsoil program from the start...we'll see.
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