[Jim B]

I plan to use 25% Lucas oil on the diff, engine, tcase, tranny on the old girl. Have any of you used it and what has been your experience

All I hear is that when it comes to original old parts is the best thing around. I've spoken with a few shops that work on old vehicles that tested and swear buy it.

[Outlaw]

Jim,
Great stuff only good luck with it.....
Had my own trans shop for years and sold it in there ...
I think you will like it ...


John

[Jim B]

John,

This is good to know. I'm going to give it a try. I've used it one time before and noticed it was like honey and was a bit concern of the heat. After reading and speaking with a few they made me aware that I would be mixing it with the regular gear oil. If I follow certain percentages the coating will actually stay on hard to get to places keeping the older parts always lubricated. I also noticed that is also being used sometimes in newer vehicles.

[NonStop]

Lucas is a well known additive, the only downsides have been that in newer vehicles with the smaller diamieter oil passages and more precise tranny machining, it has caused problems, on older motors it has been an amazing thing for longevity and protection..although it has also been known to clog oil filters that are not as high flow as others, read low surface area and lousy foltering medium...
It is a "climing" lubricant and actually sticks to the metal so it goes where others can't... Bob covers lucas, here is a great site for oils and filters
Bob the oil guy

[Jim B]

NonStop,

Good link, good info.

Quote

been known to clog oil filters that are not as high flow as others

Yes, I was a bit concern and this is why I would not use it in a modern vehicle. There are no filters in diff, tranny, Tcase. The engine is a high flow housing type of oil filter. From what I was told you need to watch out for your percentages and the old girls would treat you right.

[Rollbar]

I use 20-30% in all my manual gearing. Never had a problem & when I partically torn down my T-176 to install a clutch in the wife's 86' it was clean & new looking.

Fact:
I drove a 18 wheeler for a while & we used 40% lucas in our tranny & 30% in the differentals, well we left FLA to go to Maryland & 100 miles out of Maryland the tranny went, started wining etc. & in the middle of the night we did't want to stop so I went for it. Go to a friend house for a weekend & tore the tranny down & found the two main shaft bearing were almost gone causing a very loose shift/fit. After further review we bought new bearing & used the OLD SHAFT since the Lucas protected it, the shaft was fine, go figure. Moral of the story, Lucas will get U home when U most need it. Oh, we have something like 550 thousand on the tranny.

RollBar

P.S. The tranny was a 13sp. double over behind a Detroit 6 banger. Put that in your Jeep. :sneak: