Joined: Feb 15, 2007 Posts: 30 Location: Okanagan, BC, Canuckland
Posted: Sun Oct 21, 2007 10:31 am Post subject: tranny oil, just 80/90?
I currently have my tranny out of my jeep, due to broken clutch disc spring. Usually I will fill the tranny up with 80/90w oil, but are there some better lubricating oils for our old trannys?. My rebuilt tranny has only about 7K miles on it. thanks for your advice...grant j
Joined: Dec 02, 2006 Posts: 115 Location: Bloomfield, New Jersey
Posted: Mon Oct 22, 2007 9:05 am Post subject:
Maeserik: Go to the Willys M Jeeps Forums and search down to the Wed, August 15, 2007 blog entitled " Transfer Case Fill & Quantity". Check out page two. There is a photo of ther Lucas Oil bottle.
Joined: Apr 03, 2005 Posts: 271 Location: Chester County, PA
Posted: Wed Oct 24, 2007 8:30 pm Post subject:
I'm not sure if I would recommend that guys.
I'm not a chemical engineer, but my feeling is that if it was designed to run with 80-90w oils, that's what should be running in the gearbox / engine. In my humble opinion, I wouldn't put additives like Lucas Oil in it. To me, they're not worth there money.
I seem to recall doing some reading a while back about these oil additives, and I seem to remember clorine and teflon being major components, both of which can be terrible for an engine (teflon can clog passageways and chlorine is corrosive (as it is very reactive).
A quick google search reveals this experiment done by this guy.
http://www.bobistheoilguy.com/images/lucas/lucas.htm
This guy basically says Lucas does it's job of getting oil to move, but it creates a ton of air bubbles. Since air bubbles are not oil and cannot lubricate, that's a bad thing. I imagine this would be a simular to a situation where you had too much oil in your crankcase, and thus your crankshaft kept splashing it, foaming it up. _________________ Bob Collins
1954 M38A1 MD79056
Good points Bob. I am not an additive guy either. But I treat the additive topic like witch craft. Some folks get downright upset when you tell them there's no scientific data to support any improvement in performance or increased life expectency with these witches brews. So I just let them believe what they want. My plain jane lubricants have done me well since 1960. _________________ Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
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Go to the Willys M Jeeps Forums and search down to the Wed, August 15, 2007 blog entitled " Transfer Case Fill & Quantity". Check out page two. There is a photo of ther Lucas Oil bottle.
