Twin Disc oil

[kneepdeep]

I am a new owner of Twelve meter, it has the Detroit Jt-450 diesels with twin disc gears.
Two questions; I cannot tell if the gears are 506 or 507 gears, the plate is so badly corroded, on both I cannot read.
Anyone else have the same power package?
Also changing all fluids , I know they take straight 40 wt, but wondering what others use. I dont want to put the same 40 wt, that I put in the engines, which is delo 100. Which is just for 2 stroke diesels.
The twin disc site is just plain frustrating. Any help is great appreciated.
John

[prowlersfish]

You can use the same 40w as the engines . Or you can use a CF4 oil if you like ( only use CF2 in your engines being 2 stroke ) The Delo 100 is CF-2 Delo 200 is CF-4

[kneepdeep]

Ok, thank you. I did'nt want to put the cf -2 oil in it, for a lot of reasons. I spent an hour with a brass brush, getting corrosion of plate and got some data. Told me oil capacity, not type. All good, thanks again.

[prowlersfish]

CF-2 will be fine , but nothing wrong with CF-4 in your gears . The main reason I would not use CF-2 is its not as easy to find and there for you could pay more for it . CF-4 is all over

[kneepdeep]

Yes cf-2 a pain to find, and expensive. $350 to change just the main engine oils! Ouch!

[Jerry]

My 450 hp, 671TI's are mated with the Twindisc M507A's in my 12 Meter.
You can go to any Napa and get their straight 40 weight house oil, which is made by Ashland and is CF2 rated. Here locally it runs about $75.00 per 5 gal.
I have always used the same oil in my Twindiscs as I use in the engines as per my Detroit service manual.