solekeeper

saw a diy with a member doing his oil change via this way.. i figured i should invest in one since it's not too expensive. which one is the most practical/easy to use?



it won't be used often, so i don't want anything electrical (if such a thing exists) i'd like to keep it as simple as possible.


also i'm used to removing drain bolts and replacing them with new seals etc.. obviously this isn't neccesary with the mittyvac... but is swapping seals something that should be done in general, when changing oil? or as long as the bolt isn't loosened, it will be fine?

thesaintusa

I use a mittyvac to change the oil in my cars.

Works pefectly fine, and makes it much easier. No different than how they change it at the dealership.

Settthhh

They are not expensive at all and definitely easy to use, not messy.

solekeeper

was just really curious about the drain bolt issue.. should these seals/o-rings be replaced when doing oil changes? or is it only if that bolt is removed?

Jasonoff

I believe it's just a crush washer on the drain bolt so it can seat to imperfections. If you don't remove the bolt you don't need to change it. That's how they're designed.

MJ50

i use this...

Euler

I have a mityvac and it works great. I also use it on my yard equipment and for removing old gas from things like my generator. I still go under the car on occasion just to drain any sludge from the oil pan.

On the crush washer. I have never replaced one any vehicle I've ever owned and never had a drain bolt leak.

solekeeper

thanks for the replies guys. leaning towards that one mj.

in general, how much oil do you guys feel is being removed via this method as compared to removing the drain bolt? i've read that most vehicles sumps dont allow all of the oil to fully drain via the bolt. mittyvac better for this, (removing more)?

MJ50

i'd say about 1qt difference between extracting and draining...

solekeeper

that is alot.


think i'm gonna buy that one off amazon.

or maybe if i can find it locally. i hate waiting for car goods to come in the mail.

MJ50

2-day shipping if u r prime member...

Merc63

How long does it take to suck the oil from the engine? I think mine took 30 mins is that normal?

MJ50

never timed it but it's definitely less than 30min...
oil needs to be warm to extract faster...
maybe ur oil was colder...

Bigtickets

Isn't it better to change the oil when it's warm?

Jasonoff

I have an MV7300. I'd say it pulled around 7.5L of the 7.8Lish in the pan. Maybe you didn't get the tube down far enough?

Which one do you have? I'd say 10min with 100psi inlet pressure and oil around 78C.

tfthach13

I was lead to believe that draining from the bottom will yield more oil than sucking it through the top?

rentzington

Yes it will but as noted above its not a huge difference

solekeeper

air operated sounds cool. but one more thing that can break. lol


how has yours treated you?

Jasonoff

It's actually less complicated than the hand pump unit. It just uses a venturi valve.

I've only used it once so far. Was super easy.

MJ50

should've stated <1qt...

solekeeper

on a final note, which oil should i be using down here in south florida? i cannot seem to find a definitive answer whether 5 or 0 40?

Valvestud

That's the one I have as well. I modified by buying a metric sized push-to-connect reducer plastic fitting to eliminate the stepped rubber adaptor between the two tubes. And another with a plug in one end to cap off the end of the tube when I'm not using it to prevent residual oil from dripping out the end of the draw tube.


Next time around, I'd buy the one with the vacuum pump. The hand pump is not well made and tends to lose the ability to create a vacuum.

solekeeper

dammit...


for those of you with the vaccum pump, how is the quality? i don't want to use something twice and have to junk it.