Mobile Oil Change service

The reason I ask this is because I manage a lube department for a heavy equipment company and was recently approached by a fleet manager from a trucking company. We service several excavation and heavy equipment companies fleets and don't really target trucking fleets.
Although, after speaking with the trucking company he told me he would much rather pay to have a mobile service come and knock out several P.M.s for his fleet (200+ Trucks/Trailers) while they are shut down after 5pm during the week. And the reason I say 3 hours for a service is because he would rather not send a driver on the clock to go wait in line for an oil change when that cuts into production for the day.
I can't help but think to myself how profitable a 1 man owner/operator would be with a Lube Trailer/Skid setup and a customer with a fleet that size.
All of their trucks and trailers are lined up on the yard everyday and like you said, it should take no longer than an hour to thoroughly service a truck and knock out a handful in a day when you can slam dunk them 1 after another.

Considering buying oil in bulk and competitive mark ups are near 100% per gallon and 20-40% mark up on filters. The deal he made was $200 per truck(standard P.M.) + Oil & Filter Cost, and a $75 dollar trip charge for the days we come out to service his trucks regardless if we service 2 or 10 in a day. $75 per trailer inspection/grease job. Noting any issues with the tractor or trailer and or adding fluids if necessary as well to any compartments.

I just see a very good opportunity to potentially go into business as a mobile fleet lube service after adding the numbers up.


Thank you for the help and comments above guys.