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Hey guys, last month i made on my c63 the oil change with my mytivac. All went just perfect.
Yesturday i did same thing on my wife c300 2009...after 20 minutes of pumping only 3liters was out.... Bubble air in the tube from the dipstick....change the tube, came thing. Pump about 40minutes then get about 6liters....so much bubble in that...almost impossible to drain all oil.
Any of you have an idea why??
4matic? The tube won't hit the bottom of the pan if so, you need to make sure the tube seals around the top of the dipstick tube to properly extract all the oil
I had this problem on first use. I called CS an was told a considerable number of Mitivacs were sold with either defective valve gaskets or the top gasket or both. They sent me both. Problem fixed.
4matic? The tube won't hit the bottom of the pan if so, you need to make sure the tube seals around the top of the dipstick tube to properly extract all the oil
Yes 4matic...you mean i have to seal the dipstick tube to not get air between tube and dipstick?
Yes 4matic...you mean i have to seal the dipstick tube to not get air between tube and dipstick?
Yes, the mityvac may have come with a couple of rubber plugs/connectors, one of them fits and seals perfectly into the top of the dipstick tube. The vacuum created will pull all the oil up and out through the dipstick tube
Yes, the mityvac may have come with a couple of rubber plugs/connectors, one of them fits and seals perfectly into the top of the dipstick tube. The vacuum created will pull all the oil up and out through the dipstick tube
I change my oil with a manual hand pump mityvac, and I can get pretty much the full volume of oil out in 20 minutes. I stick the tube all the way in and then pump out oil until the air bubbles start, and then I pull the tube out slowly until it finds more oil, usually only a few inches until I hit more oil. Make sure to keep the negative pressure inside the mityvac by pumping it or you won't know when you hit a new area with oil. Just rinse and repeat that until the tube makes it out of the dipstick hole.
Not sure why it works this way, but I use the same method to get all the oil out of an ML350 and CLA250. Probably the layout of the oilpan.
4matic? The tube won't hit the bottom of the pan if so, you need to make sure the tube seals around the top of the dipstick tube to properly extract all the oil
I don't have a 4-matic, but I will have to try this out (I've always used the tube method). Wouldn't this be the preferred way with or without the 4-Matic? I don't think I have this adapter that came with my MityVAC.
I don't have a 4-matic, but I will have to try this out (I've always used the tube method). Wouldn't this be the preferred way with or without the 4-Matic? I don't think I have this adapter that came with my MityVAC.
I'm not sure if it's the preferred way with or without, but I do know it works very well. I've done about 10 oil changes (3 4matic w204s), and every time it extracts the entire quantity of oil without a problem.
I just make sure of a few things before beginning extraction:
- Engine oil has reached operating temp
- Car is on a level surface
- Car has sat for at least 5 min
- Oil filter housing is removed/unscrewed
I'll post a picture of the type of rubber fitting (found at a hardware store) I'm currently using when I get a chance, I unfortunately lost the original mityvac one.
I'm not sure if it's the preferred way with or without, but I do know it works very well. I've done about 10 oil changes (3 4matic w204s), and every time it extracts the entire quantity of oil without a problem.
I just make sure of a few things before beginning extraction:
- Engine oil has reached operating temp
- Car is on a level surface
- Car has sat for at least 5 min
- Oil filter housing is removed/unscrewed
I'll post a picture of the type of rubber fitting (found at a hardware store) I'm currently using when I get a chance, I unfortunately lost the original mityvac one.
Luck you, I did an oil change on my fathers w204 today
The only really important bit is at the end, the rest of the stuff was just to get it to fit onto the bigger tubing. Sticks right into the top of the dipstick and seals around it, all the oil gets collected. I believe I found the piece in a brake bleeding/vacuum testing kit
Did my first oil change using an oil extractor this weekend. The suction on mine is created internally so you don't need a seal at the top of the dipstick. I was even able to empty a bucket of oil with it. i would think all of them work on the same vacuum theory, but maybe not.
This approach of creating a seal around the top of the dipstick tube will only extract oil that is above the level of the bottom of the dipstick tube. To get all of the oil out, you need a drain tube that will reach to the bottom of the crankcase. ie the 'floor' of the oil pan. With the drain tube completely submerged in the oil, the vacuum for extracting the oil is guaranteed and no 'mechanical' seal is need at the top of the dipstick tube. I believe this is consistent with the descriptions in the DIY sticky docs....
I got all the oil out using Funk's method. took about 20 minutes to do the whole job, another 20 to do the cabin filter and air filters.
just using the hose sucks to much air, once you seal the dip stick with the rubber piece that comes with the mityvac. all the oil seems to flow out without having to pump more than 10 times.
my first oil change took forever this one was much better.
If the tube is not hitting the bottom of the pan you are leaving any metal fragments that should be getting vacuumed out. By sealing around the dipstick tube you are getting most of the oil but there is a gap between the tube and the pan.
08-09-2016, 09:03 PM
