I would definitely wait till the needle registers at 160 degrees F (minimum reading on our cars). But I will mention my friend who has a Subaru STI. His aftermarket oil temp gauge reads 180-210 max. Like I said, it's an aftermarket unit so maybe its calibrated differently than ours. But this brings up the question of whether other performance cars have lower oil temps when fully warmed up? If so, then it's probably fine to get on it at lower oil temps than 230-250.
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