I have put the Laycock service bulletin in my Yahoo album, located at:
http://pg.photos.yahoo.com/ph/tr6nut@sbcglobal.net/my_photos
Hugh Barber
Hollister, CA
'73 TR6
-----Original Message-----
From: owner-6pack@autox.team.net [mailto:owner-6pack@autox.team.net] On
Behalf Of Sally or Dick Taylor
Sent: Sunday, February 27, 2005 1:08 PM
To: 6pack@autox.team.net
Subject: Overdrive oil
Sorry about the last post. which excluded the printout of the Laycock
service bulletin. Hugh Barber volunteered to send it in it's original form,
once I can get it to him.
Briefly, it shows the use of "regular mineral oil 30wt. for winter use, and
20wt. for summer climates".
Herman feels that the hesitancy of the OD to engage when cold, was more
related to fluid flow, such as oil being too thick. He cautioned that
electrical connections should all be looked at before going to the task of
replacing the oil.
Herman further recommends, if it's decided to change oil, to use automatic
transmission fluid as the flushing agent. A/T can be used without harm, for
shor periods in the TR tranny and OD. If the car is already up on jack
stands, to drain the units, add in three pints of the A/T, and run the
engine with OD engaged. Use jackstands under the trailing arms to avoid the
possibility of the axle yokes banging against the frame, when the rear
wheels are turning.
After 10 minutes or so, drain it out and go to the recommended 20 or 30 wt.
oil. Residual A/T fluid will not spoil the oil. (In fact, some racers use a
10% blend of this stuff) He prefers 20W-50 in the boxes with OD that he
builds for himself and others.
Dick Taylor
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