MBNUT1

So this works ok? I am in the middle of changing my oil and want to give this a try.

ChrisHimself

time-tested dealer approved method of changing oil. I am a shop and you are 100% good to go based on all the info in this thread with all the various pieces of equipment mentioned.

MBNUT1

Sorry I wasn't clearer I was specifically asking about pouring the new oil down the open filter housing. Seems like a genius hack.


I should add I did use my mitivac pump with warm oil this time and it pumped well but wouldn't hold a vacuum so I had to pump every bit out. I got 8 liters out.

Edit: Just confirmed the pour the oil in the filter housing method. Works fine. The drainage flow rate is a little slow but that is a small price to pay for the built in funnel. You just have to be patient when you check the oil level.

One nice thing about using the extractor is there is one less opportunity for introducing a leak or loss of oil.

ChrisHimself

Yeah the mityvac is a chore to use but its still convenient when it works

oh **** i never thought to just do it that way

yeah you can basically just leave it in for a decade and itll be fine, some people even have re-used the washers for multiple oil changes.

MBNUT1

You can feel the o-rings started to become less pliable than the new ones.

derekwh

I bought one of these to change the oil on my boat (twin volvo turbodiesels) that had no room under oilpan to to drain the oil, it works great for my cars, I can just get two oil changes in it before having to dump it.

https://www.westmarine.com/west-mari...-14557417.html

MPTrader

curious what o rings you're referring to

MPTrader

Curious what o rings you're referring to as I thought the washer reference was regarding the drain plug.

MBNUT1

Good point about the washer. As I have only done top side extractions on my W212 I didn't make that connection. I was referring to the filter O-rings.

Edward993

Well that was real gem of a tip. I like it, thanks! The Walmart jugs are great on price, lousy on pouring so this is a fabulous tidbit!

Edward

Edward993

Well that was real gem of a tip. I like it, thanks! The Walmart jugs are great on price, lousy on pouring so this is a fabulous tidbit!

FWIW, the concern that not all the old oil being removed is a wholly unwarranted concern. Though I'm relatively new to MB, I'm an old 911 guy, and we've all been doing oil changes that leave copious amounts of oil still in the system: engine in back, oil cooler in front (some cars two coolers), all the lines ...yeah, lots of oil you're not draining. Never an issue over many decades from our aircooled beasts! My 350 has a ~8qt sump so yeah, I ain't worried about whatever bits are left in every galley throughout the engine.

Edward

ChrisHimself

Regarding the last bit of oil being removed, even if you leave an ounce, oil starts to lose it's volatility resistance as it degrades, if its just a tiny bit it would usually just burn of and get fired out the back while the fresh stuff continues to work for you. The normal oil pours for these cars in my observation usually start cooking off at around 7500, so as time goes on that residual in theory really to be in there anymore

MBNUT1

What is your measurement system for this observation?

ChrisHimself

at around that mileage in my area, when going to the 10k OCI, it's pretty normal to start topping off

i'm aware that other people don't top of fall the way to 10k in other locales, but it's commonly accepted to lose .5-1qt between oil changes with the factory pour. That and I see what comes out of these and have a pretty sizeable sample size. Anything I say here is anecdoctal though. I don't exactly do write-ups.

we're also kind of a performance shop.. so our peoples' driving habits tend to be a little spicy.

MBNUT1

Ok I have observed similar top off requirements. I drive non spicy.

ChrisHimself

you know where to find me if youre tired of topping off..

OraDBAforpsoft

I finally did my oil change over the weekend. I bought the adapter in post #45 and the OEM tool. It worked fine on manual pump, but I was unable to get the pneumatic air side to do anything. I am reaching out to the support site to see what I did wrong, or if there is a part missing on the venturi knob.

DFWdude

Last Summer I bought one of the Holt pneumatic oil extractors from Harbor Freight Tools. (See post #51)

https://www.harborfreight.com/pneuma...tor-57056.html

I intended to couple the new extractor to my existing air compressor...

https://www.harborfreight.com/2-gall...sor-64596.html

My oil was not due for changing at the time, so I waited until a warm day last week (mid Feb). My old Mityvac manual pump was a chore to use because with repeated uses, the suction became less forceful, requiring constant hand-pumping with the handle last time I used it. But this new one worked wonderfully. It extracted all but a teaspoon of oil. (I use the acquarium tube all the way down the dipstick tube method.)

What used to take 20 minutes of manual pumping with lots of effort with the old unit was done in less that 10-minutes. I am very pleased. HTH...