Internal Engine Cleaning

five gallons of paint thinner and a pressure siphon/venturi gun is what I use. No smoking!😆

Stephen,

I like your answer. That saves a lot of work. Do you do anything to aggitate the thinner while it is in the pan? Do you do several cycles using the same thinner, perhaps strainning it each time before re-using it? -Jan

My D2 service manual mentioned some type of engine flushing fluid that CAT uses. As I recall you drain the oil and then replace with the flushing fluid, start the engine or maybe just spin the main with the pony for five minutes then drain the flushing fluid out. Anyone ever tried this?

Stephen,

I like your answer. That saves a lot of work. Do you do anything to aggitate the thinner while it is in the pan? Do you do several cycles using the same thinner, perhaps strainning it each time before re-using it? -Jan

[quote="janmeermans"]Stephen,

I like your answer. That saves a lot of work. Do you do anything to aggitate the thinner while it is in the pan? Do you do several cycles using the same thinner, perhaps strainning it each time before re-using it? -Jan[/quote]

Jan, you didn't say if you plan to clean and overhaul the engine. If you are planning that, mix half old coolant with the engine oil and idle it up untill it gets hot. That will slush it out, maybe repeat a couple of times, don't load engine, maybe just take filters out and wash off then run again, they will collect a lot. After the sludge stops comming out put in new filters and oil and work it a bit but listen for any knocking sounds. If it works good and holds oil pressure, drop the pan and check the crank bearings. That may be all it needs.
Later Bob

Jan, we have a chain store here that sell cheap junky tools from China. I bought a siphon wand that has a connection for compressed air and a hose to drop into a bucket of your choice solvent.

1)Remove all drain plugs and inspection covers.
2)Manually remove large deposits
3)Put a large container under the drain hole to capture as much solvent and filth as you can
4)Donn protective gear like dish washing gloves , eye protection
5)"go to town " spraying the solvent everywhere you can
6) "wash, rinse & replete until satisfied

Flushing and cleaning may be OK--------but switching to a high detergent oil behind non-detergent usually brings on a high rate of oil consumption.

Delta Dirt

[quote="Delta Dirt"]Flushing and cleaning may be OK--------but switching to a high detergent oil behind non-detergent usually brings on a high rate of oil consumption.

Delta Dirt[/quote]

plus alot more crap flowing into the oil pan and filters. i'd remove inspection covers on the pan if it has any or remove the pan and clean. my d13000 had inches of crap in the pan nearly choking off the pump screen. it had covers and i made good use of 3" putty knife and plenty of rags with paint thinner (menards = cheapest). i also pulled and cleaned the screen. i'm glad i went this far with the effort and time every time it runs i'm confident its getting oil like it should. its 1937 and i don't think the pan was ever off or cleaned. good luck.

No tricks that I know of either, just plenty of work with solvent and "lint free rags" and scrapers. Not like one guy I knew with the flathead Fords that would set them on fire to burn out the gunk (with engine out). Still use that method to clean off the oil pump pickup screens though.