how cold is too cold for oil temps?

sig11

Here was my solution... I went from 160 on 50-60F days (city driving hits 180) to a solid 180 at highway speeds (~220 city driving) at 20-40F days. All it takes is an old cardboard box. It's ugly and mine has melted from driving in the rain but it works. A friend was building me a more permanent cover but I haven't heard from him in a while.


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