SHOP NOTES — PRIMELINE AUTO LLC MANSFIELD, TEXAS 76063 (817) 825-1513
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Straight answers,
written between repairs.

NOTE 01 — FLEET

WHY FLEET TRUCKS GET SERVICED ON SATURDAYS

A work truck in a service bay on a Tuesday is a truck that is not earning.

4 MIN READ
NOTE 02 — PARTS

THE 3-YEAR PARTS WARRANTY MOST SHOPS CAN'T OFFER

Genuine Dodge parts sourced from the Dallas hub carry a factory warranty the dealership network honors for three years.

3 MIN READ
NOTE 03 — THE SHOP

WHAT A DEALER-TRAINED TECH DOES DIFFERENTLY

Fourteen years inside Mopar service lanes, from oil changes to running the department.

4 MIN READ
NOTE 04 — DIESEL

DIESEL VS. GAS: WHY THEY FAIL DIFFERENTLY

Air-fuel ratio, fueling, and heat: why a diesel shrugs at conditions that destroy a gas engine, and what each one actually needs from maintenance.

4 MIN READ
NOTE 05 — FLEET

THE REAL COST OF PUTTING OFF TRUCK MAINTENANCE

A missed $200 service becomes a $5,000 repair becomes a truck that misses a week of work.

3 MIN READ
NOTE 06 — EQUIPMENT

SKID STEERS, TRACTORS, GENERATORS: YES, WE WORK ON THOSE

Heavy equipment repair in Mansfield TX with trailer pickup and delivery to Ennis.

3 MIN READ
NOTE 07 — CUMMINS

6.7 CUMMINS LOSING POWER? THE USUAL SUSPECTS

A 6.7 Cummins that falls on its face under load usually traces to fuel pressure, a lazy turbo, or a sensor lying to the ECM.

4 MIN READ
NOTE 08 — POWER STROKE

THE CP4 PUMP PROBLEM EVERY 6.7 POWER STROKE OWNER SHOULD KNOW

The CP4 high-pressure fuel pump on 6.7 Power Strokes can fail and send metal through the entire fuel system.

4 MIN READ
NOTE 09 — TRANSMISSION

68RFE SLIPPING OR IN LIMP MODE? READ THIS BEFORE THE REBUILD

The 68RFE behind Ram diesels slips, hits limp mode, and scares owners into $8,000 rebuilds that are sometimes a $200 fix.

4 MIN READ
NOTE 10 — DURAMAX

DURAMAX HARD START WHEN COLD: WHERE WE LOOK FIRST

A Duramax that cranks long on cold mornings usually has a fuel system letting air in, tired glow plugs, or weak batteries.

3 MIN READ
NOTE 11 — ECODIESEL

ECODIESEL PROBLEMS: WHAT ACTUALLY FAILS AND WHAT IT COSTS

The 3.0 EcoDiesel in Ram 1500s and Jeeps is a great engine with a known list of weak points.

4 MIN READ
NOTE 12 — COOLING

DIESEL RUNNING HOT WHILE TOWING? WHAT WE CHECK FIRST

A truck that climbs toward the red pulling a trailer in August usually has packed cooler fins, a fan clutch that quit, or transmission heat feeding back into the engine.

4 MIN READ
NOTE 13 — DEF SYSTEM

DEF LIGHT ON AND A COUNTDOWN ON THE DASH? HERE IS WHAT IS ACTUALLY HAPPENING

A countdown on the dash is a schedule, not a diagnosis. Low fluid is the easy case; a bad sensor, crystallized injector, or contaminated DEF throws the same warning.

5 MIN READ
NOTE 14 — TRANSMISSION

ALLISON 1000 SERVICE: WHAT THE INTERVAL REALLY IS AND WHAT A REAL JOB INCLUDES

The Allison will outlast the truck if the fluid is changed and both filters come out. Most quick services do half of that. What we do when one is on the lift.

4 MIN READ
NOTE 15 — MAINTENANCE

DIESEL FUEL FILTERS: THE REAL INTERVAL, AND WHAT SKIPPING ONE ACTUALLY COSTS

The injectors run at 30,000 psi and the only thing protecting them is a filter that costs less than a tank of fuel. The intervals by engine and the bill when one gets skipped.

4 MIN READ
NOTE 16 — FLEET

WHY A TRUCK THAT DRIVES FINE STILL FAILS ITS ANNUAL INSPECTION

The inspection does not care how the truck drives. The items that fail most are the ones the driver never feels. What we see, and how a fleet stays ahead of it.

4 MIN READ
NOTE 17 — TURBO

TURBO WHINE, SURGE, OR LAG? HOW WE TELL A DEAD TURBO FROM A $40 BOOST LEAK

A whine, a surge, or a flat spot under load can be a dying turbo or a $40 boot. They sound the same from the seat. How we tell them apart before anybody orders a turbo.

5 MIN READ

Talk to the guy who does the work

No service advisor, no phone tree. Call or text the shop, describe what the truck is doing, and you'll get a straight answer from the tech who will actually touch it. Walk-ins and fleet inquiries welcome at 731 S 6th Ave Ste 709, Mansfield.

Call (817) 825-1513 Get directions