Stuart
I would only add to what Rick says about John Esposito's advice. John also
states that 90W will cause premature failure of OD pump or blow out the
pressure seals. Multigrade or detergent oils will foam and cause loss of oil
pressure within OD. Applies to both A and J type ODs. Non-OD can use 90W
hypoid stuff. Note that the OD shares oil with the rest of the transmission
due to (bad?) design, which means you can get gear grindings in the OD if
they get through the pump screen.
Also, check the level after a little run-in, since it takes awhile for oil
to flow to the entire gearbox, especially for ODs.
Jerry
*********************************************************************************************
Date: Sat, 26 Feb 2005 18:29:03 -0500
From: "Rick & Lori O" <trinitygadget@alltel.net>
Subject: RE: Transmission oil
Stuart--John Esposito (Quantum Mechanics - O/D rebuilder) required I use
non-detergent 30-weight motor oil in my 'A' O/D he rebuilt. 17,000 miles
later and no problems. The manual recommendation to use 90W is fiction, as
is several other errors in the Bentley pub.
Good luck.
Rick O.
72 TR6
Date: Fri, 25 Feb 2005 21:59:16 EST
From: StuBeatty@aol.com
Subject: Transmission oil
Just got off the phone with a good friend who has been having some
difficulty with his overdrive. When the car is cold, the overdrive will not
engage. He
contacted a local British car shop who told him it is because he is running
90 wt gear oil in the transmission. This guy went on to say that he should
run 10W30 or the heaviest should be 20W50 in the gearbox.
All the manuals I have read specify 90 wt oil, which is what I have in my
car and I do not have any shifting or overdrive problems.
Anyone out there have similar problems and run different oil in their
tranny?
Stuart Beatty
76 Sleeping Carmine
------------------------------
|