Diff Fluid - clarification please...
 

I need to change the oil in the rear diff of my 300D - I've read lots of posts and I'm a little confused - please clarify this for me:

I found posts recommending the following fluids for the diff - which one is the right one for me?!

1) SAE90 Hypoid Gear Oil

2) 85 W 90 Dino

3) 80 W 90 Dino

4) 75 W 90 Full Synthetic

From what I've read, some members have experienced noise in the diff after switching to Fulll Synthetic so I'm probably going to pass on that, but still which one of the other three other choises is the right choise?!

MF

Nice avatar...
 

I love the icon in your your profile: it looks like "Czarna Madonna" icon from the Cloister in Czestochowa (Poland) I've seen as a child...

The avatar is from an Eastern Orthodox icon, but I do not know the origins.
Have you seen the Black Madonna of Poland icon? Try this http://www.christusrex.org/www1/apparitions/pr00002.htm, maybe this is what you saw as a kid.

I've had Redline MTL (75W-90) full synthetic in my 2.88 for 2 years now, with no problems.

Warnings on other posts...
 

I'd like to but I've read some other posts warning not to use Synthetic in these old cars... so as a rookie I'm a little leary of using Full Syn...

I have 75W90 in my rides out back. I use the dino and change it often too, it's cheap.

Could you post a link to a thread where someone had a problem with synthetic gear oil? I think its great stuff - Mobil 1 synthetic 75w90.

Ken300D

Can't find the link...
 

I know I've read one post where someone had 'wished they never heard of synthetic...', but as luck would have it I can't locate that thread now... :(

AMSoil 75W90 Synthetic in the 2.47.. been great.
Noticed a huge difference switching from dino to synthetic in both engine oil and trans fluid. :thumbsup:

Amsoil 75W90 Synthetic forever!
Product description: Long Life Synthetic Gear Lube SAE 75W-90 (FGR)
Specifically engineered for extended drain intervals up to 500,000 miles as set by equipment manufacturers for over-the-road trucks and heavy equipment. Prevents wear and improves equipment life. Excellent "All Season" summer and winter performance. Outperforms all conventional gear oils. Also excellent for passenger cars and trucks. Compatible with most limited-slip differentials. Performance specifications include: API GL-5 & MT-1, MIL-PRF-2105E, Dana SHAES 234 (Formerly Eaton PS-037) for 250,000 miles, Dana SHAES 256 (Formerly Eaton PS-163) for 500,000 miles, Mack GO-J & GO-J+, Meritor 0-76N, and Navistar TMS 6816 plus hypoid gear oil specifications from all domestic and foreign manufacturers such as GM, Ford and Daimler Chrysler. Can also be used in rear axles where API Service GL-4 lubricant is recommended.