8N hydraulic oil

gmoose · Jun 1, 2015

I used CARQUEST 80W-90 gear oil GL-5 and it seems to foam a little. Is this oil ok for the 8N. thanks

Dell (WA) · Jun 1, 2015

gmoose........in 1939, Ford specified 5-gals of 80wt gear oil, they now recommend spec: M2C-134D. Caution on GL-5: it can have additives that are NON-friendly to BRASS. As fer foaming, you could be over-filled or under-filled. Hint: remove the bottom 6-o'clock bolt of yer 6"-roundy dipstick plate and let enny over-fill drain down the outside of yer tranny. Iff'n nuttin' drains yer under-filled. Which means MORE fill'em-up by the tranny shifter. My bet, 'cuz of the bubbles, yer under-filled and the gears are whippin' it up like puddin'........Dell

chuck bergstrom · Jun 1, 2015

hi, Do NOT use 90wt gear oil. Use a mineral oil. If you are in the Cold, you will have
trouble this winter. Ford was always specific about that. Chuck

KenL · Jun 1, 2015

Why wouldn't you just use the dipstick to check oil level?

rvirgil_KS · Jun 1, 2015

Marks on a non original dip stick may not match level at bolt hole. You could use dipstick, but first make sure marks match the hole.

8N hydraulic oil

gmoose

New User

Dell (WA)

Well-known Member

chuck bergstrom

Member

KenL

Member

rvirgil_KS

Well-known Member

Similar threads