I'll second Tom W.'s choice of Jasper. I used them when I was doing maintenance for a fleet of delivery trucks and never had a problem. Probably installed ten or twelve engines and four or five transmissions with zero failures. Did have one with a cracked oil pan but that could have occurred during shipping or my installation. They fast-shipped me a replacement pan, no hassle.

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“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.”
― Brian P. Cleary, You Oughta Know By Now