Diesel Q&A
Focused questions about diesel truck maintenance, towing setups, mileage, engines, and buying decisions.
Is the 3.0 Duramax reliable at high mileage?
A high-mileage 3.0 Duramax can be a good buy with records, but check emissions history, service intervals, use pattern, and payload limits.
Read answersIs a half-ton diesel enough for a fifth wheel?
A half-ton diesel may tow small trailers well, but fifth-wheel pin weight often overwhelms payload before tow rating.
Read answersWhat service records should you ask for before buying a diesel truck?
Ask for oil, fuel-filter, coolant, transmission, differential, emissions, fuel-system, tire, brake, and repair records before buying.
Read answersIs a clean Carfax enough before buying a diesel truck?
A clean Carfax helps, but it cannot replace service records, inspection, title checks, rust checks, and a real test drive.
Read answersShould you buy a diesel truck from an auction?
Auction diesel trucks can be cheaper, but missing records, limited inspection, as-is terms, and hidden repairs make the risk higher.
Read answersIs a fleet-owned diesel truck worth buying?
Fleet-owned diesel trucks can be good buys when records are strong, but idle time, heavy use, and wear need careful inspection.
Read answersIs a CP3 conversion a good sign on a used diesel truck?
A CP3 conversion can reduce fuel-system risk, but only when parts, installation, tuning, and documentation are clean.
Read answersShould you worry about CP4 failure on a used diesel truck?
CP4 failure can be expensive, so check fuel-filter records, repair history, symptoms, recalls, and any documented prevention work.
Read answersWhat should you check before buying an LBZ Duramax?
Before buying an LBZ Duramax, inspect cold starts, Allison shifts, tuning history, coolant pressure, rust, and service records.
Read answersWhat should you check before buying a used 5.9 Cummins?
A used 5.9 Cummins needs more than a good engine. Check fuel system, transmission, rust, front end, towing history, and records.
Read answersWhat should you check before buying a used 6.7 Power Stroke?
Before buying a used 6.7 Power Stroke, check fuel-system records, cold starts, emissions history, towing use, rust, and transmission behavior.
Read answersWhat should you check before buying a used 7.3 Power Stroke?
A 7.3 Power Stroke can be a good buy, but age, rust, leaks, starting system, transmission, and records matter.
Read answersShowing page 1 of 4 across 40 published questions.