I do my own maintenance also. My coach in my signature is a Ford V10 Gasser and I also own a 2011 Ford F250 diesel truck.
Just taking an oil change the cost of materials is dramatically different. Oil: 6 qts gas, 13 qts diesel, oil filter: $5 gas, $15 diesel. The diesel truck has two fuel filters that need changed every 5th oil change at $125.
The diesel also has two starting batteries that I just had to replace at $250. Would have only been one with the gasser.
If you can't so your own work, you can throw in the $100+ per hour labor charge for a diesel mechanic. Also the time required to do the job is longer.
