Mark,
Our 1993 Detroit 6V-92TA uses the following filters:
Oil- NAPA 1970
Fuel- Secondary (mounted on engine) NAPA 3120
Fuel- Primary (mounted on chassis w/see through bottom) Parker-Racor S3202
Coolant Filter- Use filter dependent on type of coolant.
Cross Reference Wix or Baldwin as they are excellent filters, pass on Fram.
Recommend to carry 2 spare primary and secondary fuel filters plus large baggy to catch diesel when changing.
Detroit Diesel recommends 15K change intervals for oil. I change at 10K. Only use SAE #40 Delo 100 (not 400). O'Reilly can get it overnight or Chevron distributor. Buy 7 gallons and fill 5.5 gallons. Change with warm engine. Never use a multi-grade oil.
Change alternator belts. Recommend digital photo of data plate on alternator and using Gates green stripe fleet belts.
Pierce
There is only one filter for the motor oil?
Mark,
Only one on ours, located on the driver's side a bit forward low down and close to the engine.
A pair of axle caps are about $39 and may be part number MR8D-1 but check by counting. Buy at: Price List - Blank Title (http://www.axlecap.net/price-list.html) If you tow, remove BOTH axles (that's why they are sold by the pair). You won't need a gasket with these, just tighten the nuts down.
Tow truck driver may be lazy and try to tell you removing one is fine. It's not.
Pierce