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I have a 2001 Ford F-350 Pickup with a Powerstroke Diesel with 7000 miles. I'm getting ready to change over to synthetic oil. What AMSOIL motor oil would you recommend to use?
AMSOIL Series 3000 5W30 Heavy Duty Diesel Oil is our premium top of the line product. While there are best uses for both our Series 3000 and our AMSOIL 15W40 Diesel and Marine Oil, Series 3000 is our recommendation for the Ford Powerstroke engine. It surpasses the API Energy Conserving Rating requirements designed to provide significant fuel savings. It has highly effective anti foam agents to prevent oil foaming. Series 3000 offers better protective film at higher temperatures than conventional SAE 40 oils while retaining fluidity at subzero temperatures.
Can you explain the problems involving oil foaming and drivability problems in Ford/IH Diesel Engines?
Problem: Some owners of Ford trucks equipped with the IH Diesel engine have had drivability problems due to oil foaming. They have been told that it's because they are using AMSOIL.
Answer: All quality oils contain antifoam agents, usually silicone compounds. Silicone, in small quantities, is an excellent foam suppressant. Unfortunately, larger quantities actually contribute to the foam problem. AMSOIL uses the ideal quantity in the diesel oil. In fact, when test comparisons are made between AMSOIL 5W-30 or 15W-40 and Shell Rotella T 15W-40, both AMSOIL oils better controlled foam than the Rotella T.
Additional silicone can be introduced to the oil via the RTV Silicone used as a gasket and seal material that has been over-applied and has seeped out from between the sealing surfaces. This exposed RTV Silicone can produce leaching that occurs over time at a relatively constant rate. This means that an oil exposed to this added silicone for a longer time/mileage is more likely to experience this phenomena.
If you experience drivability problems with your Ford Powerstroke engine, regardless of oil brand, the solution is an oil drain and refill with the same brand of oil or another brand of oil, whichever you choose. As mentioned earlier, the AMSOIL Diesel oil outperform the common Ford recommended oil, Shell Rotella.
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