Kind of late in the game, as most are/have already upgraded to the later models with the Jag engines, but for those M62TU die-hards, I thought I create a thread of "Lesson's Learn" or stupid mistakes so others could possibly avoid.
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1) When reinstalling the Oil Rails on top of each camshaft, make sure to use the low profile (short) nuts that originally came off. I was not paying attention when installing and used a few of the regular 10mm nuts that are taller, which then caused my valve covers to leak, as the taller nuts don't allow the VC nuts to fully compress the VC gasket.
Moderators: If you find this thread useless, please remove....
1) When reinstalling the Oil Rails on top of each camshaft, make sure to use the low profile (short) nuts that originally came off. I was not paying attention when installing and used a few of the regular 10mm nuts that are taller, which then caused my valve covers to leak, as the taller nuts don't allow the VC nuts to fully compress the VC gasket.