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  #21  
Old August 13th, 2016, 08:03 PM
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John B.
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Yep.
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  #22  
Old August 13th, 2016, 08:36 PM
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Ed
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Quote:
Originally Posted by LostChord View Post
Ed, would overfilling an 85/95/380/380-stumpy be a problem, or is that something specific to the LT77?
I don't know anything about the LT85 or the LT95, but at a very high level, the R380 is not much different from the LT77 other than some beefed up parts and a different reverse gear design.

Unless you're filling the gearbox through the reverse light switch hole, there's no way to overfill the gearbox to the point where it's more than a fraction of a quart full. I guess if you jacked the truck up on one side, you might be able to get more in there, but if you're doing that, you're doing it on purpose.

It's not like the engine where the crankshaft has to stay out of the oil. The standard fill level of the LT77/LT380 already totally submerges the layshaft and gets very high up on the mainshaft gears.

I guess if your gearbox seals are in bad shape, you'll just leak more oil =)
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  #23  
Old August 14th, 2016, 12:58 AM
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Brian
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Quote:
Originally Posted by sonoronos View Post
I don't know anything about the LT85 or the LT95, but at a very high level, the R380 is not much different from the LT77 other than some beefed up parts and a different reverse gear design. Unless you're filling the gearbox through the reverse light switch hole, there's no way to overfill the gearbox to the point where it's more than a fraction of a quart full. I guess if you jacked the truck up on one side, you might be able to get more in there, but if you're doing that, you're doing it on purpose. It's not like the engine where the crankshaft has to stay out of the oil. The standard fill level of the LT77/LT380 already totally submerges the layshaft and gets very high up on the mainshaft gears. I guess if your gearbox seals are in bad shape, you'll just leak more oil =)
Thanks Ed - thumbs up
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  #24  
Old August 14th, 2016, 06:22 AM
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While you're down there it's always a good idea to check the breather hoses. They can gum up over the years causing internal pressure that can blow seals.

What I've done is disconnect at the axle and blow some compressed air to dislodge any crap that'll move.
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  #25  
Old September 13th, 2016, 10:02 AM
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Bill Campbell
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Looks like MTL Redline has a couple of weights. Anyone recommend one or the other?

Red Line (50204) SAE 75W80 API GL-4 Manual Transmission and Transaxle Lubricant - 1 Quart

Red Line (50304) MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant - 1 Quart

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  #26  
Old September 13th, 2016, 10:04 AM
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Adam
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Quote:
Originally Posted by wcampbel@nas.edu View Post
Only one of those in MTL (50204) , the other is MT-90.
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  #27  
Old September 13th, 2016, 10:18 AM
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Bill Campbell
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Quote:
Originally Posted by st0k3d View Post
Only one of those in MTL (50204) , the other is MT-90.
Gracias. I missed that distinction on the bottles.
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  #28  
Old September 13th, 2016, 10:19 AM
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John B.
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You definitely want MTL and not MT-90.

They actually make more than those two... https://www.redlineoil.com/Products.aspx?pcid=7
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