Riffraff Diesel Technical Knowledge Center
New Edge CTS4 Lineup: Bigger Screen, Faster Monitoring, More Tuning Options
Oct 20th 2026
Quick Summary: The new Edge CTS4 lineup brings a larger 5.5-inch display, faster gauges, Wi-Fi updates, diagnostics, custom tuning support, and multiple performance options for diesel and gas trucks.
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6.0L Powerstroke Cooling System Pressure Problems: Cap, Leaks, Overheating, or Head Gaskets?
Oct 19th 2026
The 6.0 does have a head gasket sealing issue, but that doesn't automatically mean every symptom that looks like a head gasket failure, is actually a head gasket failure. Plus, by now, 20+ years after
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Opti-Lube Winter Anti-Gel Diesel Fuel Additive
Oct 16th 2026
Cold-weather diesel problems usually start at the fuel filter. As temperatures fall, paraffin wax naturally present in diesel, begins forming crystals. Once those crystals get large enough, they can r
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KC Turbo Upgraded Exhaust Manifolds for 1994-2003 7.3 Powerstroke
Oct 12th 2026
The factory 7.3 Powerstroke exhaust manifolds are now discontinued from Ford, making good OEM replacements increasingly difficult to find. New old stock still surfaces occasionally, but the original F
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Diesel Fuel Gelling and Waxing: Symptoms, Prevention, and How to Fix It
Oct 9th 2026
Most diesel owners know the risk dropping winter temperatures imposes on diesel fuel. As diesel gets cold, naturally occurring paraffin wax begins coming out of solution. Those wax crystals can
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