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Old 02-11-2024, 11:58 AM   #10
AZIROC
 
Drives: '86 IROC-Z '18 ZL1
Join Date: Jul 2019
Location: Arizona
Posts: 741
I'm a RP fan but recently switched to Amsoil. Also switched to Amsoil Severe Gear 75W-90 this past season. I had RP prior and no issues.
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