If they are stupid enough to think 0w20 goes in the Z, then they are stupid enough to screw up pretty much anything. I wouldn't let that dealer even look at the car, much less service it.
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2011 370Z 6MT Sport Gun Metallic | ARC | CJM | Ecutek | FI | Fujimura | R2C | SPL | Stillen | TWM | Z1 | ZSpeed | |