Any suggestions on this. I have an Earl's
oil cooler. The 1st one developed a crack and was leaking
oil. I exchanged it and installed the second. Less than 300 miles and it has developed the same issue. On the 1st and 2nd one I was running XP4 (15-50)
oil. I just now switched to Royal Purple 5 or 10-30. I was thinking that the XP4 oil was so thick that when the oil was cool and the pressure behind it (60 psi), that it cracked it. Is my logic correct on this. Also, just now, I've installed a canton oil thermostat to bring the oil temp up.