I have no experience with the unit you have listed above. I have this unit and use it on all of my cars it comes with numerous attachments and I have not one complaint about it. It works on my Porche, Mercedes and BMW cars. I never tried it on my truck.
I note it is a 12 volt so you would need to extend the leads to reach the rear battery which would increase the potential for an arc which may cause you some issues much like the don't boost these cars articles all over the site. You could run it off a separate battery as a plan "B" .
I have been considering an extractor and am looking at the electric ones as well as a model that uses a shop vacuum in the setup. My question about the one in Catterman's post regards the power source. In the pictures and description it looks like it hooks to the battery. Since the SL has the battery in the trunk, is this practical? Am I missing something?
IMHO my vote is to use the drain plug at the bottom of the engine. Maybe it's more work
but you will get rid of all the old oil. I will only use the oil extractor to clean up in the
oil filter house.
There will be a lot of oil left in the oil pan when you drain it with a oil extractor.
There is very little if any oil left in the oil pan after I use the evacuator. I have verified this in the shop at the MB dealer I work for. That is where I was first introduced to the oil evacuator in the first place. I like the pnuematic version as I believe you got more suction. There should be a place to connect the electric on somwhere unger the hood. I know my BMW has a + Post under the hood. I never looked on the MB since I never had to jump start it. I have a 3.5hp 30gal compressor that use to drive the oil evacuator. The dipstick tub in the mercedes goes way down into the oil pan, that why this works so well. The hose on the evacutator seals to the top of the dip tube same way the dipstick does. First warm up the engine for 10 minutes (I take a ride around the block), then loosen the oil filter and filler cap. Then remove dipstick, attach evac. and let her rip (or suck in this case). you never have to jack the car and crawl under or try to get the car on ramps. I also use the Evac unit to do brake fluid and PS fluid services. Extract as much of the oil fluid as possible from Master cylinder, then attach pressure bleeder and flush brake system.
There will be a lot of oil left in the oil pan when you drain it with a oil extractor.
Jocke
I had the same impression until I actually used an extractor. Try if first before you draw the conclusion that "a lot of oil left when you drain it with oil extractor". You may be surprise.
Nice extractor you got there Jim! Unfortunatly my wife would cut off my manhood if I spent $250 on one Ya, the electrical issue on the ebay one I found is a little odd, with the battery in the trunk. I will look under the hood and see if I can find a + pos. terminal...
The drain plug is NOT right the the bottom of the oil pan but about 3/8" ? up on the side. So there would be that much oil remaining in the pan when you drain by the plug (unless you tip it by jacking up the other side of the car). MB design their cars to be serviced from the top (by sucking) and that is how they do it at Dealers.
As for extractor, I would stay away from the 12-V ones as our cars are quite sensitive to voltage spikes and other electrical stuffs. So you don't really want to introduce anything extra to the system.
The drain plug is NOT right the the bottom of the oil pan but about 1/2" up on the side. So there would be that much oil remaining in the pan when you drain by the plug (unless you tip it by jacking up the other side of the car). MB design their cars to be serviced from the top (by sucking) and that is how they do it at Dealers.
The above quote is exactly what my thoughts are as well. The suction tube from an extractor is able to slide along the the bottom of the oil pan thus removing the last layer of oil which remains even after draining from the plug. This is the type of extractor that I have been using for several years now for many cars I have owned, and still do. It is very durable and is a must for DIY oil changes.
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Ya, the electrical issue on the ebay one I found is a little odd, with the battery in the trunk. I will look under the hood and see if I can find a + pos. terminal...
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