Switched to Royal Purple finally
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09-07-2007, 01:21 PM
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RE: Switched to Royal Purple finally
ORIGINAL: Armor
A note on Royal Purple...it's a good oil, but it doesn't seem to resist shearing as well as some of the other synthetics on the market, so stick with changing it every 3500-5000 miles instead of the 10,000-12,000 mile claim. I used to use RP in my WS6 Formula (LS1 V8) but switched to Penzoil Platinum synthetic on a tip from some other Firebird owners...I'm much happier with it than I was with RP...I had a noticeable temp drop even from RP and the oil stays really stable, and it's not nearly as expensive. I still use RP in my transmission and differential, however.
A note on Royal Purple...it's a good oil, but it doesn't seem to resist shearing as well as some of the other synthetics on the market, so stick with changing it every 3500-5000 miles instead of the 10,000-12,000 mile claim. I used to use RP in my WS6 Formula (LS1 V8) but switched to Penzoil Platinum synthetic on a tip from some other Firebird owners...I'm much happier with it than I was with RP...I had a noticeable temp drop even from RP and the oil stays really stable, and it's not nearly as expensive. I still use RP in my transmission and differential, however.
