Chuck S

Position the crowfoot at 90° to the handle (L-shaped). Lever arm remains the same length so the set torque remains constant.

Link to calculator.

-- Chuck

rpg51

Makes sense. Thank you. I would have screwed that up for sure.

rpg51

Like the op I'm trying to get on a good routine as far as fluid changes for a new to me 02. Mine has 17K miles. I've decided to go with Amsoil products. The dif oil choice it seems is 75W-90 or 75W-110. Which to choose and why?

The dealer installed dif oil is about 10K old. My plan is to change to Amsoil dif oil in the spring and then probably change it again in the fall. After that I'm thinking I'll do an annual change probably. Its a summer car only.

HarryD

They are both adequate, although the thinner fluid is rumored to have improved MPG, and the thicker fluid will offer more protection and be quieter. Not sure if that's an old wives' tale though?

In reality, none of the fluid arguments matter. Put in the right weight and right grade, and they're all fine (both those weights are fine). No one's motor or diff exploded because they put in M1 vs Amsoil vs Quaker State vs Pennzoil.

I've been putting the cheapo 75w90 M1 in my diff for 50k miles now since it's easy to find, no problems whatsoever and clean drain magnets every single time.

Mig233

Gotta change the diff fluid this weekend. I also got the Urea grease to grease the shifter mechanism...but that's going to require some more planning.

Also, if anyone is looking for some all season tires Michelin Pilot Sport AS3...almost brand new, let me know. ...my for sale ad keeps getting deleted, not sure why.

Chuck S

Maintenance schedule for the "rear" differential is 30,000 miles or every 2 years (15,000 miles or every year under severe service). See your owner's manual for the definitions. I doubt a large percentage of us drive under severe conditions and a differential last serviced 10,000 miles ago still has 5,000 miles before service is even hinted unless it's been over two years. My car is a summer car and I change the differential every other oil change which is done roughly every 6,500 miles according to the Maintenance Minder (on the later cars). I admit to changing the gearbox every two years despite the 60,000 mile maintenance schedule for severs service. If I'm already covered in engine and differential oil I figure changing the gearbox won't hurt and the expense is minor.

-- Chuck