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02-09-2015, 05:27 PM
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#1 |
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Junior Member
Join Date: Aug 2004
Location: Sherwood Park, Alberta
Posts: 99
Likes: 19
Liked 6 Times in 2 Posts
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Re: Gear Lube Level
FWIW - I have always run 1 - 1.25 quart of 80-90 synthetic Lucas or Valvoline. If the rear end if completely dry - I use 1.5 qt. There was a thread on here a while back - and the opinions and experiences varied. The only other thing, I remember reading on the MW site years ago that they didn't favour synthetic. When I used dinosaur oil, I had no different experience, except cold mornings.
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Mike Semeniuk 632 GTMA |
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02-09-2015, 06:40 PM
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#2 |
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Junior Member
Join Date: Nov 2013
Posts: 91
Likes: 0
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Re: Gear Lube Level
In a Drag car that is only run for short distance you can safely get away with very little amounts of gear oil. Keep in mind the differential bearings and axle bearings rotate at a relatively low rpm. The pinion bearings rotate at close to engine speed at the finish line but they are force fed gear oil by the pumping action of the ring gear. So as long as you have enough oil for the ring gear to dig into you will not have problems. My 8.8 Ford axles that are very similar to a 12 bolt GM use no more 1.5 quarts.
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02-09-2015, 09:44 PM
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#3 |
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Junior Member
Join Date: Oct 2012
Posts: 81
Likes: 0
Liked 16 Times in 11 Posts
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Re: Gear Lube Level
In drag only, with spool 10 sec car, I run 1.5 motor oil 10w40. Next step ATF oil. Reason... less difference between the run (cold) and (hot). Never broke the gear.
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02-09-2015, 10:02 PM
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#4 |
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VIP Member
Join Date: Jun 2006
Posts: 3,426
Likes: 550
Liked 335 Times in 182 Posts
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Re: Gear Lube Level
We run John Deere TDH winter blend - bout a
"Large quart"-- 9 inch Ford-----so far so good ---Comp Eliminator car 8:00 @ 160MPH |
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02-09-2015, 10:15 PM
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#5 |
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Veteran Member
Join Date: Mar 2005
Location: Sand Springs, OK
Posts: 8,132
Likes: 896
Liked 390 Times in 170 Posts
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Re: Gear Lube Level
Guys that know him, might want to talk to Jimmy Bridges about this.
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Ed Wright 4156 SS/JA |
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02-09-2015, 10:35 PM
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#6 |
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VIP Member
Join Date: Oct 2013
Location: Gulf Breeze, FL
Posts: 1,651
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Liked 33 Times in 16 Posts
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Re: Gear Lube Level
Remember what I said about a definitive answer? I really think I would be looking elsewhere for gains.
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Rich Taylor I/SA - 321 |
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02-10-2015, 12:11 AM
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#7 | |
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Veteran Member
Join Date: May 2006
Location: Murfreesboro TN
Posts: 5,133
Likes: 1,605
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Re: Gear Lube Level
Quote:
SHHHHHHHH! 
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Alan Roehrich 212A G/S |
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02-10-2015, 12:19 AM
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#8 |
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VIP Member
Join Date: Oct 2013
Location: Gulf Breeze, FL
Posts: 1,651
Likes: 8
Liked 33 Times in 16 Posts
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Re: Gear Lube Level
They should have "stickied" this one lol... http://www.classracer.com/classforum...=Jimmy+Bridges
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Rich Taylor I/SA - 321 |
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