GM LS OIL PRESSURE PROBLEMS We had rebuilt a customer’s 5.3L GM engine but they were still complaining of low oil pressure at idle. We sent them a new oil pump, but it still was low, about 17lbs at idle. We learned that there was a second oil pressure relief valve in...
COLD WEATHER COOLANT TIPS With wintertime temperatures approaching, now is the time to ensure that your diesel engine coolant/antifreeze is up to the task and staying in its liquid form. Everyone has a hydrometer or refractometer, and they’re easy to use. The question...
CK-4 Diesel Update Recently diesel engine oils changed from the decade old CJ-4 formulation to the new CK-4 formulation. While intended to be an upgrade, the new CK-4 formulation has been met with resistance and even an outright “do not use” warning from Ford Motor...
PRIMING AN LS GM OIL PUMP Priming your oil pump and your engine before start up of a new engine is very important. No new engine should be started up dry, but it is often difficult on new engines with a front crank driven oil pumps to prime. Here is where we need a...
CHOOSING THE RIGHT FILTER FOR BREAK-IN Using an oil filter designed for racing may not be what you want when breaking in a new engine or new camshaft. These filters are designed to move more GPM, or Gallons Per Minute than a stock oil filter. To obtain this outcome...
Jeep 3.8L Oil Pressure Problem Many late model 3.8L Jeep engines are losing oil pressure at the oil pump due to failure of the bypass valve. This results in destruction of not only the crank- shaft, but the connecting rods. To fix the problem, you need to find the...