TEL Recommended Maintenance Intervals - Freightliner
Grease job every 20-25k
Oil filter change every 30k; this is known as a “Dry Oil Change” at some service locations
Full oil change every 60k with 10w30 semi-synthetic oil - TEL recommends Rotella t5
The above intervals are per the manufacturer; oil changes can be done sooner, if you prefer.
Replace the Davco fuel filter as needed (Level in the clear bowl will rise as the filter clogs).
Replace the fuel filters on the engine about every other oil change.
Replace the engine air filter every 90-100k miles.
Replace the cabin air filter as needed. If you have a pet, this will need to be changed more often.
Air dryer Coalescent filter must be replaced every 150,000 miles (Freightliner filter must be used). Failure to replace this can cause emission system related issues.
Drain your air tanks daily to prevent moisture build up in the air system which can damage emissions and transmission components.