The "Oil Coolers" you see on modern GM Ls engines are in fact, NOT coolers.
They are Oil HEATERS. The premise is faster warm ups, and quickly getting the oil to temp for fuel economy.
I know, shocker, right??
Engine runs same temp with these bypassed, and oil life is same.
In this part of the Country the ends get rusty, and they leak, so I have bypassed a bunch, and replaced them too.
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"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather
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