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Old 06-02-2019, 02:57 PM   #7
PROMETHEUS

 
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Drives: 2019 ZL-1, Shadow Gray, Sold
Join Date: Jan 2019
Location: Fredericksburg, VA
Posts: 1,390
Nothing wrong using 15/50. Like someone already said, make sure the car is warmed up, before you do any "spirited" or track driving.
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