Royal Purple-Is it worth it?
03-19-2005, 04:42 AM
#21
TECH Senior Member
Racing 41 is Royal Purple's best oil for the LS1, it has shown excellent results and can be used on the street, even for 6000 miles. I'm not too thrilled with their 5w30 or 10w30 street oils. Their 10w40 street oil should do pretty well though.
03-19-2005, 07:05 PM
#23
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Two things.
1. My friend races and builds motors. His partner just switched to RP (correction it is racing 11) and dropped a tenth. He likes it.
2. I used it in my street car and when I tore it down it was coated inside with a film of brown. No detergents. I also had issues with my manual trans using it.
So... It does work for adding power as advertised. I just think that for a street motor it is not the best choice. My opinion. And everybody has one....
1. My friend races and builds motors. His partner just switched to RP (correction it is racing 11) and dropped a tenth. He likes it.
2. I used it in my street car and when I tore it down it was coated inside with a film of brown. No detergents. I also had issues with my manual trans using it.
So... It does work for adding power as advertised. I just think that for a street motor it is not the best choice. My opinion. And everybody has one....
Last edited by denton needham; 03-20-2005 at 05:01 PM.
03-21-2005, 08:05 PM
#26
My worst oil test was with royal purple...0-40
my best was with castrol German 0-30
had valvoline and mobil 1...somewhere right between the two....
a buddy of mine uses the ams oil..and he swears by it...and his oil test did better than royal purple too...
I personally would stay away from royal purple in an LS1...
my best was with castrol German 0-30
had valvoline and mobil 1...somewhere right between the two....
a buddy of mine uses the ams oil..and he swears by it...and his oil test did better than royal purple too...
I personally would stay away from royal purple in an LS1...
03-21-2005, 09:16 PM
#28
Staging Lane
synthethic amsoil
Originally Posted by shkettle
how do u all feel about the ams oil syn. i just bough a case and am gonna try it at the next interval
it seems to dissapate the heat better as oil temp is lower than other oil used
and after running the engine for 5 seasons before rebuild the housings
showed little to no wear. i swear by amsoil for other reasons but not impressed by royal purple.
03-21-2005, 09:53 PM
#29
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Originally Posted by Spaz'sLS1
where can I get RP or GC?
03-22-2005, 02:55 AM
#30
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When I started using RP 5-30 I actually started getting more than 260 miles on a tank. With Mobile 1 average was 221. With RP its about 263. With gas prices as they are I see some worth in that aspect.
"The problem is choice!" -The Matrix-
"The problem is choice!" -The Matrix-
