Just finished my cam phasers and spark plugs over the weekend. Unfortunetly I found a surprise inside my engine which I was not happy about. There was all kinds of engine sludge built up inside. Just really thick, dark, oil sludge. Ive only had this truck for the last 5,000 miles (has 76,000 now) and Ive changed the oil 5 times already (with Motorcraft oil & filter), plus flushed it twice just because Im so rediculous when it comes to maintenance. So the previous owner must not have taken good care of it. I had to clean everything and remove as much sludge as I could by hand, then spent forever cleaning out the valve covers (they were really bad). I spent hours just cleaning it out. Then when the job was done, I drained the oil and replaced the oil filter. Today (Monday) Im going to perform a more heavy-duty engine oil flush and change the oil and filter again. Hopefully I can break down more sludge. The engine runs fine and the knocking sound is gone (phasers fixed that), but Im not comfortable at all with all the sludge. So hopefully this HD flush today will help renew the engine.

BTW, to anyone hesitating to take on this job...Just go for it. I'm not gonna lie, it was a pain at some points, but its definetly do-able job to tackle over the weekend and save you a ton of money by doing it yourself. Oh and I did the spark plugs at the same time (without breaking any). I think that one of the most important things when doing the plugs was to follow the TSB exactly and not only soak the plugs but to use the motorcraft tune-up cleaner that they recommend. This stuff works GOOOOD. I loosened the plugs about 1/8 of a turn, poured about half a cap-full into each plug well, and let sit for 20 min. Then when I went back to loosen the plugs the rest of the way, and they practically fell out. That motorcraft stuff works great at breaking down all the carbon deposits at the end of the plug (where they usually break off).

 

This is the flush Im using.

http://www.powerenhancer.co.uk/produ...0-engine-purge

 

I'm doing this...and my fuel injectors too.

 

the link you gave is in the UK there's lots of stuff you can get state side

 

Don't feel bad when I did my cams my motor looked the same and I change my oil every 3,000 miles and I have 90,000

 

Really? What kind of oil and filter do you use?

 

Im going to try this flush
http://www.amsoil.com/storefront/flsh.aspx

 

That page just had a good description there so people could see. We actually sell BG Products at my work. When I told them it was for my truck, they just gave me what I needed (no charge).

 

hmmm...I was wondering if Amsoil made something like that. My work is also a dealer for Amsoil. Sucks because I just barely made the new order for Amsoil this morning.

 

I used motorcraft oil and filter but im doing this flush and using nothing but amsoil oil and filter for now on.

 

Hmmm...I'm torn now. I had been hearing that its important to run the Motorcraft 5W-20 and Motorcraft filter (which is why I stuck with that). But I could just as easily switch to Amsoil as well. I'd really like to get my oil analyzed one of these days.

 

Im switching to 0w-20 amsoil fully synthetic and amsoil filter

 

This is really good to know! I will be using that Amsoil flush on my next oil change for sure. Thanks to the op.

 

The proper way to desludge an engine is with AutoRX.

 

I dont know much about the Amsoil Flush, but I read alot of reviews of AutoRX and BG Engine Purge and it seemed to be that BG was the better choice. Theres multiple comparisons online about the two.