I'm working on replacing cam seals and cam tensioner seals and plastic guide/pads. According to Bentley it looks like the camshafts need to be removed to change the guides.

Does anyone have a recommendation (preferably experience-based) for a proper sealant to use on the end camshaft bearing caps that need to be sealed to the top edge of the cylinder head? Bentley says a sealant should be used but doesn't specify, referring to Parts Catalog which I don't have.

I've done some research, and agree with others that RTV isn't a good choice due to film thickness affecting bearing clearance. I've seen Permatex Aviation Form-a-Gasket #3 recommended, and something called Hylomar, both of which are supposed to create a thinner film.

I don't have experience with this part of my cam chain tensioner guide/pad replacement, and would appreciate input.

Thanks,
Steve