Milky brown colored lawnmower oil change?
I just found a Craftsman Lawnmower in the trash that had a snapped pull cord, and watery fuel. I just fixed it, and it runs awesome! The only problem is the oil is milkshake brown. I had it checked by an expert who said the oil should be fine if it was changed. We all know that their is a little oil left in the crankcase after draining, but i would like to clean the engine of the milky brown oil. I thought of draining the oil thats in it, and running some waste oil through to clean the engine. Should i do that?

March 2nd, 2009 at 2:01 am
sounds like water got into oil somewhere- just drain and add new no need to flush with old oil
March 4th, 2009 at 7:09 pm
get some of the stuff (I can’t think of the brand name) that really cleans out the oil. You add it to the oil, run the engine for 5 min and then drain it all. Then refill with new oil. Get it at any auto parts store.
March 4th, 2009 at 10:41 pm
Sounds like there is water in your crankcase.
Bleed it if you can, then refill.
Good luck
March 6th, 2009 at 12:11 pm
No just drain the old oil and put in new oil.
March 9th, 2009 at 9:39 am
ho;;y cow. it probably uses less than a quart of oil to fill it.
why would you not use clean oil to flush out the engine.?
the whole thing would cost less than $5.00 to do it the right way.
drain the old oil. put new oil in, about 20 ounces? to fill it. make sure you check the level before starting it.
start the mower and let it run for about 10 minutes TILL THE OIL IS REAL HOT. NOW right away drain the oil before any sediments can settle to the bottom. put a large pan under the plug. take the red hot plug out with a wrench and let the plug just fall into the hot oil, you’ll retrieve it later. let the oil drain for about 15 minutes tilt the mower forward a little bit and backwards a little bit to get as much of the oil out as possible. now fish that oil plug out of the warm/hot dirty oil.
put the plug back in and refill with more clean oil.
write down how much oil it took each time you filled it up for future reference.
good luck to ya.
March 11th, 2009 at 12:15 pm
milky colored oil means there was wasin the oil. if you drainedit and put in new oil it will be fine