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Go Back   Rx7 Forum and Owners Club > General RX-7 Area > TECH Support > MY FIRST RX7 (S4 NA) 13B engine, SCARRY knocking ONLY when turning RIGHT??

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View Poll Results: Mineral VS. Synthetic: What to use in a STOCK S4 NA 13B with unknown miles?
NEVER USE SYNTHETIC IN A ROTARY! (MAZDA REC.) 1 50.00%
Mineral Oils with proper API & Viscosity 2 100.00%
GOOD Synthetic oils (royal purple, ect) with proper API & Viscosity 0 0%
LUCAS Racing Oil Products (Mineral base) 0 0%
LUCAS Racing Oil Products (Synthetic base) 0 0%
Other products such as Marvel mystery, Hyperlube, etc.. 0 0%
It dosent care and somehow still runs on everything from canola oil to sewage... 0 0%
Option not listed here... or this is a over discussed topic. 0 0%
Multiple Choice Poll. Voters: 2.