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I have driven my 4.6L Ford about 35K miles since I bought it last year at 185K miles. It has always had a light coat of varnish on the as-cast surfaces of the head, cam multi-cap, and fill neck until this OCI with Castrol Syntec 5W-20 (my first OCI with Syntec). About 8 or 10K miles ago I...

This is from their fleet newsletter. It pretty much summarizes all of the reasons for the use of 5W-20 that we discuss here. It also puts the "only for gas mileage" theory to bed. https://www.fleet.ford.com/FFH/Rental05_23_06.asp "Why 5W20 Oil? Some customers are reluctant to follow Ford's...

I render fats and oils for various purposes, so I thought I would share with you the basic method I use to do it. I am sure it is age old, and it gives a product that will last hundreds of years if you keep it cool and sealed from the air. If you have never rendered before, I suggest getting...

I am somewhat or totally confused as to the reason for the use of ashless 2-stroke oils in outboards vs. ashers in air cooled 2-stroke engines. What is the reason?

Have any of you experimented with the ratio of UCL in the gas and its influence on crankcase oil consumption? FP, Lucas UCL, ATF, etc... I generally run between 1:500 and 1:1000 UCL to gas, and find it has a marked influence on the amount of crankcase oil used by the engine. I first noticed...

...I was towing an ox cart heaped high with elf carcasses. WOW, what a power loss! Water temp was up, and power was down. But I just had to try it. I took a slower speed 200mi trip with the GC, then drained 5 of the 6 quarts of GC out when I returned. I added 5qts of MC 5W-20 and took the car...

Hi, I'm new here and this is my first post. I have been lurking and searching info for a couple of months, and I have really learned alot from this forum. I hope I can add to the knowledge base. I see alot of talk about oils and engine noises, both topside and bottom end. Cold and hot viscosity...