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Having a difficult time finding the motorcraft Dino 15w-40 diesel oil as well as the 5w-40 synthetic. Even on fords official site. I thought I heard something about rebranding of fluids, can anyone shed some light on this?

Well I guess I should have come here first. My old 6.4PSD was amazing on the old formulation of the Delo400LE but then that went bye bye and so did the truck. I traded it in yesterday for a nice new shiny and new car smelling 2019 King Ranch Super Duty with the 6.7 Powerstroke. So where is the...

'08 Optimax 200hp. My issue is this: Mercury Marine recommends Optimax oil or Mercury premium plus as acceptable for use in the new Optimax engines. My local Mercury Marine dealer and Service provider ONLY sell the Mercury Premium Plus Synthetic blend oil and upon asking the question why I...

I have read numerous pros and cons for Motorcraft 5w-20 (Conoco) oil. I have seen alot of UOA's for Mazdas using this oil and they look very impressive but how about a hard worked modular Ford engine ? I seen a real recent one on a V10 used during summer conditions and trailer towing which is an...

You are the proud owner of a new 2004 Ford Lightning truck. Bear in mind this truck has a 5.4L modular supercharged engine which is conservatively rated at 380HP. You want the absolute best protection for the engine as it is quite an investment and you know it will be occasionally run in the...

OK. To start I know this question has been posed before but from my research it seemed like alot of 2x-20W bashing rather than hard factual data to back a recommendation. I want to hear recommendations for the best oil to be used in a hardworked 5.4L supercharged V8. Factory fill is 5w-20...

Since joining this forum I have read page after page of what appears to be highly professional reviews of a multitude of engine oils. I am seeking the absolute best oil for a high horsepower V8 supercharged engine. This is a brand new Ford Lightning 5.4L. Please support your recommendations...