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I'm currently running Castrol 10w40 with a quart of Lucas. My oil pressure is pretty high all the time. I'm thinking I need to go down to 10w30. I've always used castrol but they have Motorcraftv10w30 that is a synthetic blend for cheaper than the castrol. Engine oil is NO place to skimp imo, but I trust motorcraft. Do you guys think I would run into any problems like this just switching to a synthetic blend. My dent has been my daily driver for about 2 months now and the oil still looks really clean. Thoughts?
I was talking to a guy at auto zone yesterday about the modified motors and how they oil. He was telling me that the engine oils the front and top of the engine first and then the oil goes to the rear main and bearrings last. He was telling me theres a plug down by the fuel pump you can take out run a metal line from there to another plug by the oil pressure sending unit to keep the oiling even throughout the whole motor. Anyone ever heard of this? I was thinking that after the oil pump pumps oil throughout the engine at start up and is circulating this wouldn't be a problem. But I don't have any problems with oil pressure just a little parts house talk I guess.
i wouldnt worry bout switchin oils. and yes, that mod to the oilin system is very common and is one of the best things you can do to prolong the life of a 351M/400.
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