Your correct. My bad. I had the wrong diff in mind. The Ford workshop manual call for SAE-90 hypoid oil [old Ford spec: SQM2C-9002-AA]. 1.3 liters. its a 80W-90 oil.

Sierra/granada/scorpio lsd units are Viscous LSD and the use a silicon fluid/grease with a friction modifier. I don't know witch silicone fluid / grease is used.



 

Getting it to work properly(as good as in the original chassis) is ofcourse a task on its own.
Project Binky on youtube is a very good example how it should be adressed


Speaking of.. i got a e36 subframe and made parts of the chassis legs/ mounts to weld into capri frame rails



Also, had a go at the front windscreen rail

Sierra/granada/scorpio lsd units are sealed though, gear oil does not touch lsd discs

Quote from: dave73 on July 18, 2025, 20:58:29 So the COMMA - EP80W90GL5,

Is that OK, and then add the Motorcraft XL-3 to it.

Dave

That's correct.

So the COMMA - EP80W90GL5,

Is that OK, and then add the Motorcraft XL-3 to it.

Dave

I'm not a stereo expert so i can't tell you how to build a sound system.

A friend of mine how owns a car stereo shop told me a power cap witch is a condensator, is actually a waist of money as a good amp already has big enough condensators on the power side of the amp. It was more important to have the 12 feed like the big enough battery and alternator and 12 volt feed and earth cable and earth points in good order.

Thanks mate, its almost finished and ready to be let out of the garage. Need to decide if the dolphin Carrozzeria head units going in and i need to add the power cap to the amp  in the boot

We had Comma oils and other products in the past. Today its hardly sold in the Netherlands.

Ford M2C119-A is not a additive but a oil specification.

Motorcraft XL-3 is still available and i use it in every Ford LSD. It was the only friction modifier that actually reduces chatter and gear noise in my LSD 8.8 inch rear axle of my Capri V8. With 30 euros a bottle it isn't cheap but replacing a set of LSD clutch plates will cost a lot more. Since clutch plates for you diff are hard to find and expensive i would use XL-3 just to be safe.

Check ebay or amazone. Even the local Ford dealer should be able to order it as Motorcraft XL-3 additive is still being used in the mustang and trucks that have a LSD. 

Thank you Paul,

I found this;

Rang Comma, they said their oil
COMMA - EP80W90GL5 should be compatible

Comma also do this,  Limited Slip Differential Gear Oil -  LS80W901L

Uses Ford Spec additive M2C119-A, need to check that's compatible with the original additive Motorcraft XL-3.


XL-3 (U.S.& Mexico)is Ford EST-M2C118-A


Dave

Beautiful car. Great work!!