Quote:
Originally Posted by NROTOXIN
So your service bulletin was completely out of scope of his situation.....got it. Now, if it is just a GOOD time as any (not mandatory) to change the fluid, that is much more in scope and makes sense.
Signed 2021 not 1963.
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The point of the service bulletin is to highlight that Powr-Lok LSDs have a
break-in period of five to seven thousand miles. Back in 1963 that was news to the Jaguar folks. Non-LSDs don't have a break-in period. Most of the guys around here with Jag rears don't know that and don't realize that they should probably change out their rear fluid at the five to seven thousand mark if they have a Powr-Lok. Grubby's post above is a perfect example of simply not knowing that requirement for a one-time change out on LSDs like the Powr-Lok, whether you have an XKE or a Camaro. He's likely surprised to see that GM specifically called for a fluid change out on an LSD at 7,500 miles and then never again. Chances are, you are too. You just won't admit it.
