Blown head gasket, cooked on oil removal?

[Rockster67]

Hey guys, I just finished replacing intake, exhaust valves, rings, head gasket etc. on a 1.0. I'm not a mechanic so it was an adventure for me. I wouldn't have tried without the help of Johnny Mullet, Dr Bill, and Crvette Guy. Thanks to everyone on here. My question is "How do I get that baked on, light brown, cooked oil residue off the cooling system walls inside the block". The previous owner had driven it very hot with a blown head gasket and the globs of oil in the coolant wound up coating everything. I assume it acts as an insulator and interferes with heat transfer. I tried Prestone Radiator Flush to no avail. Is there anything out there to deal with this particular problem? Thanks.

[Crvett69]

if its a real hard coating that won't come off there are a couple things you can try but sometimes only way to get stuff like that off is take the block down to a machine shop and have it boiled out. since its together i doubt you want to try that. i have had good luck with a product that napa sells, its a 2 part powder you use once the engine is together and running. the heat activates it. also these engines run so cool you may not have a problem with it overheating. i would mainly worry about the radiator being plugged. you can take it down to a radiator shop and get it checked. if they say it needs to be rodded out just buy a good used one or a new one off e-bay. its cheaper and better in the long run

[Johnny Mullet]

I agree. If it's already together I suggest using the ATF trick. At about 100 miles before your next oil change (After rebuild, change oil at 500 miles) add a quart of ATF to the engine oil. You may have to drop the filter if you are not low on oil. The ATF will slowly clean the inside of the engine and it does a pretty good job. I do this every oil change and also use Seafoam instead of ATF sometimes, but the ATF seems to work better in the oil where the seafoam works great for direct injection cleaning.

This will take a long time to clean up, but it will work slowly and gradually. This will also keep the carbon from building up around the piston rings. I have rebuild several of these engines and never really bothered cleaning the cooked oil from the inside of the head. As long as it is not loose chunks of carbon, it will not hurt anything.

[RossT]

Another product that I have had good luck with is calle auto-rx. It is an additive that goes in the oil. It's a concentrated dose of "esters". The esters are simular ro the esters in expensive synthetic oils like redline/amsoil/royal purple ettc, but these are much more concentrated and are natural not synthetic esters.

They will gently clean the interior of your engine.

You can read about the product at www.auto-rx.com

If you want independent reviews, got to www.bobistheoilguy.com click on forums and
go to "oil additives.

This is one of the few additives that I use. I am not an additive type guy.

[Crvett69]

he is talking about build up in the cooling passages inside the engine, not the oil passages and surface