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Message: [QUOTE="tbsimmons, post: 1398232, member: 2026"] I have never heard of crank bearing walk due to oil temps. I am sure it could occur with heat cycles but I think the bearings would be replaced well before then. Really the only thing I have seen make a crank bearing move is the crank hitting it. But if it does the "keepers" in the bearings are gone anyway and they should be replaced. Now this is assuming the end play is right and the thrust is not out of whack. Oil temps, keep in mind you have to be above 212 to boil the water out and some like it at 220 minimum to make sure everything is gone. Oil in todays standards is good up to around 270 range before break down starts. This assumes you are using a good oil and not some hey "Billy Bob uses this oil from the back forty" crap. The only oil cooler upgrade that is bolt in that I have read about is the MPD one. Other than that I am not sure, never really worried about it. [/QUOTE]

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