Use of OIL sealants/additives

[Regan]

I have been busy upgrading my 67 Series IIA LR, adding a Roverdive as suggested by earlier comments on this forum to get more speed, gas milege, etc. I have developed a new leak ( I have plenty others) where I installed/connected the Roverdrive to the transfer case. The lower seal between the Roverdirve and case is not holding oil when it gets hot (at the moment). I am running a senthetic blend 70 -90 wt. oil. Has anyone tried, used or reccomend or not the use of oil addititves for sealing transmissions, cases, etc. I have gone back to all my leaks with new seals, gaskets, etc. but just cannot stop them all/leaks. Yes, I know, that's the fun with older LR's. I am hoping this may help. Your comments welcome. Regan :confused:

[yank]

I would recommend stop using sythetics. They are great for new stuff, But not leaky old stuff. They will leak were it does not with conventional oil.

[scott]

... The lower seal between the Roverdirve and case is not holding oil when it gets hot (at the moment)...:confused:

i have a fairey and must admit have never had it off. is there a seal or a gasket between the case and the o/d? how many bolts hold it on? did you apply any gasket sealer, if it was a gasket? did you tighten up the bolts in a star pattern like you would a wheel?

[Regan]

I just took the roverdirve off last weekend, resealed it in hopes it will work, as well as retightned the bolts holding it in. I did tighten as in a wheel pattern. Orginally, I had trouble putting on the Roverdirve due to a cros bar for the tranmission brake that was not in the instructions. The crossbar was in the way and I was 1/3 the way through the install, so I created my own leak using the gasket and addtional sealant. If it does not wrk this time, I will take the unit completly off, clean up the dry sealent and re install, using another prodcut I heard is great as well as a non synthetic oil. I think they are greaqt, but good on older vehicles due to tolerences not as good as today's vehicles.

[TedW]

I would recommend stop using sythetics. They are great for new stuff, But not leaky old stuff. They will leak were it does not with conventional oil.

FWIW I have used synthetics exclusively for years, and my sled doesn't leak any worse than it did when I used dino juice.

Synthetics are a must if you have an OD.

And cold weather performance is light-years better all around. Just my HO.

[Regan]

Thanks, it's hot here is south Louisiana most of the time, so I need all the cooling help I can get. I'll keep running synthetic and see what happens for next 2-3K.

[TedW]

Thanks, it's hot here is south Louisiana most of the time, so I need all the cooling help I can get. I'll keep running synthetic and see what happens for next 2-3K.

Sorry, Regan! I should have checked your location. In any case, synthetic will also help you run cooler because of reduced friction.