GL-5 is it ok to use in 100 Series?

Around here small town auto parts stores carry it in 2 gallon or 5 gallon containers, independent brands.

Been told that copper is used in the synchronizers in the tranny and the sulfur that is supposed to be in GL-5 for (forget the reason) interacts with it and causes it to dissolve. GL-1, straight mineral oil, has always been specified by everybody I know on the subject.
 
Hundred series tractors are not synchronized.

Though there is some brass in the transmission, GL-5 will be fine.

Dean
 
In short it contains sulphur and phosphorus and they like to eat Brass and other soft metals.
 
There are many yellow metal safe Gl-5 lubes out there. It is inaccurate to paint all with the same brush by saying they damage brass, etc. Specifically, New Holland 80W-90 and 85W-140 are yellow metal safe.
 
Hi Dean,

So my 2000 and 4000s were and the 600s and 800s weren't?

So sir, do you know the ifs and whens of the objection on here for years about GL-5 vs GL-1? Was it the sync. washers and was it copper or brass, or bronze? Just curious.
Thanks,
Mark
 
Ford 2000 and 4000 series tractors, whether 4 cylinder or three are also non-synchronized.

The decades long aversion to GL-5 oil in vintage Ford tractors derives from the long term effects upon the bronze parts in the belly pumps used in 9/2/8N tractors.

Dean
 
(quoted from post at 05:15:27 07/17/16) Hi Dean,

So my 2000 and 4000s were and the 600s and 800s weren't?

So sir, do you know the ifs and whens of the objection on here for years about GL-5 vs GL-1? Was it the sync. washers and was it copper or brass, or bronze? Just curious.
Thanks,
Mark


Don't know what the sulfur in some GL-5 oil's is for or what it does to copper, brass or bronze.
Guess I need to see want I poured into the rear end of my 881 yesterday, I just grabbed some 80-90 off the shelf and poured it in.
If you are referring to your 2000 and 4000 having synchronizers, they don't.
100 and 1000 series both have bronze bushings in some gears and brass or bronze thrust washers.

I find it odd that sulfur in oil is bad for yellow metals but sulfur in diesel was a lubricant and some parts of a fuel system had yellow metal components.
 

If its bad for it every tractor I have worked on in the last 30 years will some day resolve the issue of wither its safe are not.

I have switched to 134 ford spec oil in most everything now except a N unless it has a live hydraulic set up then it gets 134 oil.

Somewhere around the early 90's I discover how much better 80/90
worked in colder weather that I made the switch across the board. That included N's so far I have never had a issue.

I believe its a myth that It will eat the bronze bushing in the pump on a N if its a fact I have never seen any reports of it.
 
You should be able to find it in boat motor lower end lubricants. Also John Deere sells it for manure spreader gears, etc.. The original lube was whale oil, often called 600W steam cylinder oil. It was water soluble and had little or no additives. It became illegal.

As the oils were improved they went up to GL2 or GL3, etc. Old Fordson tractors had brass worm gears in the final drive, (as well as 1 ton trucks). This was probably the reason for using GL1. The
sulfur damage occurs when both heat and stress occur. The Fordson final drives got so hot a farmer
could hardly sit on the seat. Fordson finally switched to regular gears in 1945 and used the same
drive until 1964. Gained a lot of horsepower to the wheels.
 

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