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  Mustangsandmore Forum Archive
  '64 1/2 to '68 1/2 -- The Classic Mustang
  What kind of oil in Toploader

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Author Topic:   What kind of oil in Toploader
ekbeanctr
Gearhead

Posts: 772
From: Middlebury, IN USA
Registered: Dec 2000

posted 11-16-2002 03:36 PM     Click Here to See the Profile for ekbeanctr        Reply w/Quote
What weight and kind of oil do you guys recommend for a 4 speed toploader. I am finally getting ready to drop the 351W and tranny in my 65 Fastback.

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Have a Wonderful Day
CandyApple 65 Fastback
351W, 4 Speed
Versaille 9" Rear End
Global West Front End
[email protected]

SteveLaRiviere
Administrator

Posts: 48752
From: Saco, Maine
Registered: May 99

posted 11-16-2002 04:48 PM     Click Here to See the Profile for SteveLaRiviere        Reply w/Quote
Use 2 quarts of Pennzoil 85W90 gear lube.

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'70 Mustang Mach 1 - '72 Mustang Sprint - '94 F-150

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ekbeanctr
Gearhead

Posts: 772
From: Middlebury, IN USA
Registered: Dec 2000

posted 11-16-2002 06:02 PM     Click Here to See the Profile for ekbeanctr        Reply w/Quote
Thanks, Steve Appreciate the help. Ernie

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Have a Wonderful Day
CandyApple 65 Fastback
351W, 4 Speed
Versaille 9" Rear End
Global West Front End
[email protected]

Cruzer
Gearhead

Posts: 279
From: Lancaster, South Carolina, USA
Registered: May 99

posted 11-16-2002 07:18 PM     Click Here to See the Profile for Cruzer        Reply w/Quote
Agree with Steve.

soaring
Gearhead

Posts: 116
From: New Mexico
Registered: Nov 2002

posted 11-16-2002 10:43 PM     Click Here to See the Profile for soaring        Reply w/Quote
85w90 gear lube

cobravenom71
Gearhead

Posts: 1349
From: Poinciana, Fl USA
Registered: Aug 2002

posted 11-17-2002 08:56 AM     Click Here to See the Profile for cobravenom71        Reply w/Quote
You might want to consider using synthetic gear-lube in your trans. It will shift much easier, especially in colder climates.
I have been using all 'Mobil 1' fluids for years, and they really do work better. More expensive though.

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n2oMike
Gearhead

Posts: 3058
From: Spencer, WV
Registered: Jan 2001

posted 11-17-2002 09:23 AM     Click Here to See the Profile for n2oMike        Reply w/Quote
As always.... it depends!

First off, do NOT run ATF in a toploader. I didn't know what type of oil to run in the 5-speed of my Ranger and put ATF in it. A few hundred miles of towing later, it sounded like it was full of gravel! Turns out, it was designed for gear oil. I replaced the bearing that was completely gone, but it still makes noise. I've got a replacement (for free from a buddy) but haven't installed it yet.

Gear oil is some thick sh*t. When the weather turns cold, it gets really thick, and the transmission just won't want to shift (especially downshift) until the unit gets up to operating temperature. 80w90 is the standard stuff. 85W140 is really thick, and should be saved for HIGH temperature use...

A drag race 4-speed car usually goes to the line with the transmission not fully warmed up. If thick oil is used, the unit won't want to shift very fast. To cure this, I use synthetic Mobil 1, which is much thinner at cooler temperatures. I haven't had any problems with it. The transmission has lasted through several years of abuse with it, and still works just fine.

Some will say it's too slick for the syncros, but if you don't like it, change it! It costs around $7-$8/ quart, and around 2.5 quarts are required.

I'm going to start using Royal Purple 85w140 in the detroit locker rearend this season... as it takes on some awfully harsh abuse and isn't required to make any shifts

Good Luck!

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Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220

BLstangin
Gearhead

Posts: 856
From: St. James, MN
Registered: Apr 2002

posted 11-17-2002 06:59 PM     Click Here to See the Profile for BLstangin        Reply w/Quote
I just got a toploader from a friend and called David Kee to ask him what kind of oil to use in it, and he said 80w-90 penzoil. He said that if you shift it hard, that synthetic will be to slick for the blocking rings, they won't grap and you will miss shifts and could ruin the transmission, but it is better to use synthetic if you just drive around town, and don't powershift it.

Moneymaker
Administrator

Posts: 29200
From: Lyons, IL, USA
Registered: May 99

posted 11-17-2002 08:28 PM     Click Here to See the Profile for Moneymaker        Reply w/Quote
75w90 Royal Purple synthetic Max Gear oil.
I have not found any lubricant to work better in a manual trans or diferential.

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Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
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