i find that when i change my oil, be it my truck, car, whatever, when i drain the oil, with the plug still out i dump in a bit of clean oil and let it run through until the oil coming out appears clean (usually like a 1/3 qt or so). just curious if anyone does this.

chris

 

ahhhhh, no

 

Why would you do that?

 

I understand your cleaning theory. But in reality, I think oil poured through the filler neck just takes the path of least resistance to the pan and out the hole. So any rinse effect is minimal to nil.

 

i see zero point in wasting clean oil.

 

Hey man I think when u do that it may float the last little bit of junk out of the oil pan. But not much compared to what u are puting in. I understand your thaught. but if you change oil and filter regularly don't bother.

 

One thing I've thought about doing is this:

Drain hot used oil into a clean container. After it slow to dripping, put the plug back in finger-tight. Then, pour a quart or two of the hot, used oil back into the pan via the dipstick tube. Then drain again. I think that would get most everything out of the pan.

Useless? Probably, but then again we are all taking valuable time from our lives to discuss engine oil, of all things.

 

I've never done what 4.9 has suggested, but I see his point. I would never waste any of my good oil that I am about to use. For the "rinse" I would use a cheap, house brand oil, maybe 1/2 quart and that's it.

I don't think it would do much, but again, I see the idea here. I feel it's important to drain the old oil out, when hot. With a hot engine, the rinse chaser will flow much easier, to the oil pan. With the oil filter removed, a "vented" engine causes the oil to flow slightly faster. Also, with the high cost of gasoline now, I am not as interested in achieving maximum miles between oil changes. I'd rather change my oil sooner, rather than later, remove suspended dirt and combustion by-products, and have clean, clear, fresh oil with it's full healthy additive package protecting moving engine parts. Ed

PS Wavin' here's even a better suggestion. Why not heat up a half quart of clean oil in the microwave, then pour that down the dipstick tube? Again, don't use your quality replacement oil, unless you use a $1 quart oil?

 

maybe we should floss between the rocker arms too......;-)

 

Chris,

I do the same thing with my F250 - V10. I also run the front tires up on blocks in my gently sloping driveway to get the drain plug at the very lowest point and then use maybe a quarter-of-a-quart of cheap oil to "rinse"

Just started doing that on a whim, and was somewhat pleased to see the amount dark oil that came out.

Keep it up - can't hurt...

 

Well I've never felt the urge to "flush" the engine or oil sump, I just drain it hot, as specified.

The oils dispersent should keep the solids that the filter can't remove, in suspension, so they'll come out with the hot oil.

I suppose if one feels the need to "flush", maybe something like a dose "varsol" or "kerosene", down the dipstick tube, would suffice!!!!

Now I do admit to "flushing", with an extra qt of fluid, when I do a Tranny or P/S system pump out!!!!!

 

thanks for some of you understanding...i do realize that it is basically a waste of oil but after pouring in a bit of clean oil and seeing a bunch of dark oil come back out makes me curious as to how much dirty oil actually makes it out on a regular oil change. i also understand that i am only rinsing out a bit of what could be hiding in a nook or cranny. i was just curious if i was the only one in the world that did that.
chris

 

I worked changing oil for a few years, never did I once flush the oil out of engine.

When doing an engine oil change, Having all tools and parts prior to commencing the oil change will ensure a quality oil change. Tools and parts needed are: oil filter wrench, oil filter, pcv valve, and enginge oil.

Best time to change oil is after running errands around town. Then the oil is very hot and is very thin.

Make sure the vehicle is on level ground and the drain plug is at it lowest point on the engine. remove engine oil drain plug and let the oil drain for 30 minutes to one hour, this will assure most of the used oil has drained.

Pre-fill the oil filter with new engine oil and coat the rubber o-ring on oil filter with a light coat of oil. This oil in oil filter will help the engine to not run dry and the oil on o-ring will help you remove the oil filter on the next oil change. When the new oil filter o-ring make contact with the engine, turn the oil filter appoxiamately 3/4 of a turn more. Do not overtighten the oil filter as it is not necessary.

Usually draining the oil as mentioned above will remove most of used oil in engine and when the engine is refilled with new oil it look new (unless the inside of engine is contiminated with sludge and grime, that another story).

buck

 

Chris, the more I think about it, the more I am glad you posted this topic. Why? I hope none of us here, or even casual visitors, will feel hesitant to submit an off the wall question, for fear of being ragged on. (for lack of a better word!) Also, in addition to what Grandpa Bill said (I agree with him) and others, perhaps letting a 1/4 quart of Marvel Mystery Oil, or RISLONE Engine Treatment, rinse through the oil dipstick tube, and a 1/4 quart of MMO or Rislone rinse through the oil cap and out through the oil pan drain bolt would be interesting? My idea here, being the MMO is red in color, and the Rislone a dark blue / purple color, you can then see the difference in color as compared to regular old motor oil? You will be able to see what residue is then "flushed" out, and where the MMO or Rislone, has gone through the top to the bottom of the engine. Chris, Grandpa Bill, others, do you see my point / idea here?
ED
PS The more I think about it, the more I think I'll try Chris' idea with MMO or Rislone? Unless someone has a better idea, or thinks my idea with using MMO or Rislone is not a good one? ... Using the two different "flushes" even. MMO (1/4 qt.) through the dipstick tube, and Rislone (1/4 qt.) in the oil cap location. I also think (my opinion) using Chris' flush method every other oil change, or 1:3 oil changes, would be a cheap, overall good practice to follow. Comments? Pro or Con? ///... Ed

 

thanks for the nice reply! you are right about getting ragged on...when i first posted, i thought: "This could go either way"...and as i stated before, it may be just a waste. but also, i literally can see the oil start to drain black then clear up ad the new oil runs through. i also like your ideas about the different colored oils. i may have to give that a try next time. have we discovered an oil changing breakthrough? are we just in love with our vehicles that we want the cleanest oil for them? or are we just being a bit dumb? you all are welcome to decide. even those of you who never do this and think it is a bad idea, i bet next time you change your oil, you will ponder for a moment...."should i run a bit of clean through here".
chris