Diesel Preventive Maintenance in Phoenix
Diesel preventive maintenance is scheduled service that catches problems before they strand your truck: oil and filters, fuel filters, coolant, DEF and DPF checks, transmission, and inspections. Truck & Equipment Specialists handles it across Phoenix, in shop or mobile, for the 6.7 Power Stroke and every diesel platform. Call (602) 663-0213.

Most diesel breakdowns do not come out of nowhere. There is almost always a warning sign that showed up an oil change or two earlier and got missed. Preventive maintenance is how we catch those signs while the truck is still on the road instead of on the side of it. We keep records on your truck, watch the trends, and tell you what needs attention before it becomes a tow bill.
Jonathan has spent 10-plus years on diesels and got known around Phoenix for the Ford 6.7 Power Stroke, so we know where these trucks bite. We run PM in shop or mobile across the Phoenix metro, on a single truck or a whole fleet, and we build the schedule around how hard you actually run the equipment.
Oil, filters, and coolant on schedule
Oil and filter changes, coolant service, and a full fluid check on the interval your truck and duty cycle call for. Hard desert miles and heavy loads shorten those intervals, and we set yours around how you actually run in the Phoenix heat, not a generic sticker.
Fuel filter service that doubles as CP4 early warning
The fuel filter is the first place CP4 fuel pump metal shows up. Every time we change filters we cut them open and look. Clean filters mean a healthy pump. Metal in the filter is early warning we catch before it takes out your whole fuel system, which is why we never skip this step on a Power Stroke.
DEF, DPF, and regen monitoring
We check the DEF system, monitor DPF condition, and watch how the truck is regenerating. Catching a lazy regen or a DEF fault early keeps you compliant and out of limp mode. When something is wrong we diagnose and repair it with OEM or OEM-improved parts, never a shortcut.
Transmission service and full inspection
Transmission fluid and filter service on schedule, plus a hands-on inspection of belts, hoses, brakes, suspension, and anything else that wears. You leave knowing exactly what is good, what to watch, and what needs to be handled now.
Recurring plans for one truck or a fleet
We set up a standing PM schedule so nothing slips. One work truck or a fleet of them, in shop or mobile across the Phoenix metro, on a rhythm that fits how you operate. Call for an estimate and we will build the plan around your equipment.
Symptoms we see on this job
Common questions
More diesel work we do
Fleet Maintenance
Scheduled PM, on-site service, and priority scheduling for diesel work fleets.
Learn MoreDiesel Diagnostics
Check-engine, limp mode, no-start, and smoke pinpointed with live data, not guesses.
Learn MoreFuel System & CP4
CP4.2 pump failures, injector replacement, and fuel filter service done right.
Learn More