Best Gear oil for old 1966 Eaton Outdrive

[Spooner]

I have my old Eaton series sixteen outdrive on my 1966 Donzi 16 Ski Sporter and yes it still runs fine. The manual calls out for "a first grade, heavy duty gear oil, SAE 90 weight, containing Sulphur-Chlorine-Lead additive - or Eaton p/n L-100"

Anyone have some idea of what to use these days? I don't mind paying for whatever is the best.

Also calls out for "a good quality waterproof grease" for the steering yoke, etc. So any suggestions there are appreciated too.

 

[Rob_Roy]

According to the Texaco list of abbreviations:

SCL
A Sulfur, chlorine and lead component extreme pressure additive package once commonly used for automotive type gear lubricants. Has been largely replaced by sulfur/phosphorus materials.

My first thought is that a modern marine 80w90 gear lube would be fine - but you may want to call Eaton and ask.

 

[Spooner]

Eaton is no longer around, so nobody to ask. But thinking maybe a good product from Torco, Redline or Amsoil?

 

[oilboy123]

Amsoil has been making a marine gear lube for many years. With the quality of their other gear lubes I'm sure it's pretty bullet proof.

There is also lots of companies putting out synthetic gear lubes these days as well. Good luck

 

[Rob_Roy]

You could always call Redline or AMSOIL and ask for their recommendation.

 

[nwjones18]

I have an early 70's Johnson and I just use the marine 80w-90 penzoil from walmart. No problems so far.

 

[Spooner]

Redline answered with "our 75W90 GL-5 gear oil will work fine. Gear oils have come a long way and it should work great there." I'm still a little concerned and not sure if this takes into account any clutch dogs or other out drive specific needs.

 

[oilboy123]

I would use an outboard rated gear lube myself.
It will handle water intrusion better.

 

[Pablo]

Amsoil Synthetic Marine Gear Lube SAE 75W/80W-90 (AGM)

 

[Spooner]

Thanks for all the help and input. I have the short lists for Sterndrive gear oil, grease for trailer wheels and outdrive yoke and for engine oil (Ford 289).

My gear oil choices are...

Redline Heavy Shock Proof 75W90 (GL-5) (Leaning towards this one)

Redline Gear Oil 75W90 (GL-5+)

Amsoil Marine Gear Lube (AGM) 75W/80W-90


choices for waterproof grease for trailer and outdrive yoke are..

Redline CV-2 Grease

Amsoil Synthetic Water Resistant Lithium Complex Grease (GWR)


Final Choice for Motor Oil:

Torco SR-1 5W20

Any comments or last advice?

 

[Spooner]

correction on motor oil - should be Torco SR-1 Race Oil 20w50