Diesel Q&A
Focused questions about diesel truck maintenance, towing setups, mileage, engines, and buying decisions.
Should 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 answersDoes 4x4 reduce payload on a diesel truck?
4x4 adds useful traction, but it also adds weight and parts. That can reduce payload on the exact truck you are buying.
Read answersHow do you read a truck payload sticker?
The door-jamb payload sticker tells you what the actual truck can carry, including passengers, cargo, hitch, and trailer weight.
Read answersSRW vs DRW diesel trucks: which is better for towing?
SRW is easier to live with. DRW gives more rear stability and tire capacity for heavy towing.
Read answersDo you need a 3/4-ton or 1-ton truck for a fifth wheel?
For fifth wheels, payload and loaded pin weight matter more than advertised tow rating.
Read answersShould you buy a diesel truck with 300,000 miles?
A 300k-mile diesel can work, but only when the condition, records, price, and repair budget make sense.
Read answersShould you buy a diesel truck with 200,000 miles?
A 200,000-mile diesel can be a good buy with records, clean inspection results, and a price that leaves room for repairs.
Read answersGas or diesel for towing a camper: which should you buy?
Choose gas or diesel by loaded camper weight, payload, trip length, terrain, and how often you tow.
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