A 93 should have an OHV FE290!
You'll need:
- 2 qts. of 10w-30 motor oil (conv. or synth. your choice!)
- an STP 4967 oil filter or equiv. (again, the brand name is your choice)
- 2 bottles of 80w-90 gear lube (conv. or synth. again... your choice)
- a grease gun, and a tube of grease, (if you don't already have one)
Changing the motor oil and filter I'm sure is a "no brainer" for you, just don't overfill it!
One tip... when the oil is drained, turn the key on, (without starting it) and confirm the low oil light works!
(You should do this every time you change the oil!) and then of coarse, turn the key off!
Now... for the rear end:
your 93 should have a 2-part rear end, the top part is the transmission, and the bottom part is the trans-axle.
I've heard that the older CC manuals state that SAE30 should be used in the top, and 80w-90 should be used in the bottom,
I've also heard that 30w and 80w-90 are really not that much different, but some may argue that point!
My buddy has been using 80w-90 on both top and bottom on his 94, with no ill effects!
On the transmission, (top) you'll find the fill and drain plugs on the passenger side of the unit, 8 o'clock and 6 o'clock:
On the trans-axle (bottom) you'll find them on the drivers side! (4 and 6)
Drain, and reinstall the drain plug, (yeah, I know... but it's happened!)
and fill it to the point of lube coming out of the fill hole on both top and bottom units. then reinstall fill plugs.
Grease the front end and you should be good to go!
I know... VERY detailed! but, I was bored! 