Cant find gear lube gl-1. Dows gl-5 take its place?
 

cany find gl-1 140 anywhere , Will GL-5 85-90 work ok for the rearend on a 36.Iknow this question has been asked before ,but GL-1-140 is not available around here, don p

Re: Cant find gear lube gl-1. Dows gl-5 take its place?
 

Any hypoid lube will work fine.

Re: Cant find gear lube gl-1. Dows gl-5 take its place?
 

GL-4/-5 types won't hurt a thing in the rear axle. You can also use the 85/140 if you're in a warmer climate.

Kerby

Re: Cant find gear lube gl-1. Dows gl-5 take its place?
 

Don,
Don't believe the fact that GL5 is ok to use! It is not! Any gear box or diff. that has "Yellow metal" (brass/bronze) parts will be affected in a bad way. Find a distributor of bulk oil and grease and they will sell 5 gallon pails of GL4 grease, which is ok to use. I would stick to 140 weight for diff. Do a search on the net for explanation of GL5 use. I found GL4 85-90 weight for the trans at a local NAPA store, Sta Lube/CRC brand I think. It's out there, don't give up.

Re: Cant find gear lube gl-1. Dows gl-5 take its place?
 

Now that you have me confused, what type gear lube should I use for my original 1933 rear end?

Re: Cant find gear lube gl-1. Dows gl-5 take its place?
 

gas4u,
If you re-read my thread above, don't use GL5 in your old car, whether in trans or diff. GL4 IS safe for bronze/brass equipped gears (there are some bushings and shims in each). Any GL number below GL5 is ok to use.
Most cities have industrial/speed stores that sell 5 gallon pails of grease, that will be GL4 rated. Industrial numbering system for weight is different than what we are used to seeing. I think auto 140 weight is something like 320 in the industrial numbering system. As stated above, NAPA has the GL4 85-90 weight in Sta Lube/ CRC brand.
Milt K from Pa

Re: Cant find gear lube gl-1. Dows gl-5 take its place?
 

I will run by my local napa this afternoon and see what they have, thanks

Re: Cant find gear lube gl-1. Dows gl-5 take its place?
 

There is no yellow metal in the rear axle so any oil in there is better than none. Now the transmission is a different story.

If you have a Purvis Bearing shop near you, they have Lubriplate SPO oils that are a GL-1 grade SPO-277 would be be 140 and they also have 110 & 90 SAE grades.

The Banjo rear axle is not a Hypoid type since the pinion goes straight in but EP lube won't hurt it at all. I've been running it in helicopter transmissions for years and they aren't hypoids either but that's what the manufacturer called out. (MIL-L-2105) Oh and GL-4 is nearly the same as GL-5. GL-1 is the straight mineral grade lube with no EP additives.

Kerby

Re: Cant find gear lube gl-1. Dows gl-5 take its place?
 

Did the original manual call for 160wt oil in the rear ends?

Re: Cant find gear lube gl-1. Dows gl-5 take its place?
 

Most called out SAE 80 for winter and SAE 90 for summer. Folks that use 140 do so to slow leakage down as a general rule or for very warm climates. The only grades available above 140 are SAE 190 and SAE 250. SAE 190 is kind of a new thing too. It was only recently added to the list due to ISO standards.

Kerby

Re: Cant find gear lube gl-1. Dows gl-5 take its place?
 

I found some SPO-277 on ebay, it gets hot here in Texas. Thanks for your info/thought's.

Re: Cant find gear lube gl-1. Dows gl-5 take its place?
 

It damb sure does so that should do the ticket. I looked into a later 1945 Model 59C open drive pick up operator's manual and it mentions to use SAE 140 lube for summer use and SAE 90 for winter in both the rear axle and transmission. I don't have a passenger car operator's manual so I can't tell you for sure on that.

Kerby

Re: Cant find gear lube gl-1. Dows gl-5 take its place?
 

My 33 has an 8ba engine in it, but has the original 33 rear end. Need to change the trans oil also, what do you recommend for that?

Re: Cant find gear lube gl-1. Dows gl-5 take its place?
 

Searched the NAPA website for gear oils. Just about all of the listings are either GL4 or GL5 or they don't specify the grade. There is one listing for NAPA brand (made by Unimark) 80W90 GL1 and it's only $12.59 a gallon here in Jersey. Stock number NHF 65201.

Re: Cant find gear lube gl-1. Dows gl-5 take its place?
 

Tractor Supply here in Michigan has GL1 gear oil. It says on the container that it is for older Ford tractors. I believe that will work for you.
Cal

Re: Cant find gear lube gl-1. Dows gl-5 take its place?
 

NAPA sells GL1-SAE 90wt part# NHF65-201 - $13.49/Gal. I use that in the trans and blend it with Lucas Heavy Duty Oil Stabilizer (pure mineral oil) in the differential.

Re: Cant find gear lube gl-1. Dows gl-5 take its place?
 

Lot of information here . Will do some more calling around and checking . Tractor supply here didnt have nothing but gl5. A couple of tractor shops hee that might have what i want. Thanks don p

Re: Cant find gear lube gl-1. Dows gl-5 take its place?
 

Check with NAPA. I just bought a 5 gallon pail of GL-1-140. It is available. It's just that most parts dealers don't want to bother chasing it down because there is so little demand for non-synthetic straight 140 wt.

Re: Cant find gear lube gl-1. Dows gl-5 take its place?
 

My local O'Reilly's has straight 140, GL-4 @ $13+change/gal.

(Best to stop by and not take "Becky's" word that they don't carry it.)

Re: Cant find gear lube gl-1. Dows gl-5 take its place?
 

Do you have a NAPA stock number on the 140W GL-1??

Re: Cant find gear lube gl-1. Dows gl-5 take its place?
 

API classification subdivides all transmission oils into 6 classes:

API GL-1, oils for light conditions. They consist of base oils without additives. Sometimes they contain small amounts of antioxidizing additives, corrosion inhibitors, depresants and antifoam additives. API GL-1 oils are designed for spiral-bevel, worm gears and manual transmissions without synchronizers in trucks and farming machines
.
API GL-2, oils for moderate conditions. They contain antiwear additives and are designed for worm gears. Recommended for proper lubrication of tractor and farming machine transmissions.

API GL-3, oils for moderate conditions. Contain up to 2.7% antiwear additives. Designed for lubricating bevel and other gears of truck transmissions. Not recommended for hypoid gears.

API GL-4, oils for various conditions - light to heavy. They contain up to 4.0% effective antiscuffing additives. Designed for bevel and hypoid gears which have small displacement of axes, the gearboxes of trucks, and axle units. Recommended for non-synchronized gearboxes of US trucks, tractors and buses and for main and other gears of all vehicles. These oils are basic for synchronized gearboxes, especially in Europe.

API GL-5, oils for severe conditions. They contain up to 6.5% effective antiscuffing additives. The general application of oils in this class are for hypoid gears having significant displacement of axes. They are recommended as universal oils to all other units of mechanical transmission (except gearboxes). Oils in this class, which have special approval of vehicle manufacturers, can be used in synchronized manual gearboxes only. API GL-5 oils can be used in limited slip differentials if they correspond to the requirements of specification MIL-L-2105D or ZF TE-ML-05. In this case the designation of class will be another, for example API GL-5+ or API GL-5 LS.

API GL-6, oils for very heavy conditions (high speeds of sliding and significant shock loadings). They contain up to 10% high performance antiscuffing additives. They are designed for hypoid gears with significant displacement of axes. Class API GL-6 is not applied any more as it is considered that class API GL-5 well enough meets the most severe requirements.

Re: Cant find gear lube gl-1. Dows gl-5 take its place?
 

Found the last gallon of gl -1 140 around here, went to an old auto parts store that has been around sence i was a kid. He says sure i got one left. Don p

Re: Cant find gear lube gl-1. Dows gl-5 take its place?
 

I replaced my transmission oil today with Napa GL-1 80-90 wt /mineral/gear oil, drove it around town some, transmission grinds easier than before, lots of double clutching, not sure which transmission I have, 3 speed behind an 8BA. Seemed like it shifted better with Coastal 80/90 GL4 or 5. Any thoughts?