Mityvac to suck out the last quart of oil

[Bladecutter]

Lots of square rooting about ramps and stands … Just don’t …

Actually, just do.

You put 2 ramps on the ground if you can't get the low front end of a car like my Porsche to go over 4 at once.
My Stelvio, on the other hand, can clear all 4 at the same time, so that car it's easier.

You make it sound like it's actually some odd amount of effort I'm going through.

If you want to buy me a Quick Jack lift instead, I will happily send you my address for delivery.

 

[Snagglefoot]

A

Here is the oil pan of a Chevy LS 6.0. There is actually a section of oil pan that is lower than the side mounted oil plug, so no, you won’t get every once on this one. Also here is a shot showing the baffle bolted in place that would make it dicey to get a plastic tube in there, made worse buy the fact the dipstick tube comes in at nearly 45 degrees. After 16 years and 250,000 miles there was a thin layer of mung on the bottom section of the pan. It cleaned up with a paper towel and some Simple Green. I’ll post the photos later. Gotta go.

Here are the photos that go with posting #34. The last photo shows the dipstick angle. Enjoy.

 

[SubieRubyRoo]

I would spend more time dragging out jackstands and getting the rear of the car high enough to make a difference in the oil drain than it would take to suck the extra quart out of the pan. I have given thought to a shop with a lift changing the oil, perhaps the last quart comes out just fine when its level. I have never had a shop change the oil in any of my cars, ever.

I have never attempted to drain the oil through the dipstick tube. I would imagine it would take a long time. I still have to access the underside of the engine to change the filter... which I change at every oil change.

Why would you allow a whole dirty quart to remain in the engine? That's 20% dirty oil right off the bat at a fresh change. The last 20% sucked out looks the same as the first 20% that came out when I pulled the drain plug.

You may get “extra” oil out with the Mityvac, but you’re not getting 100% of the oil out. Not even the guys who let their car drip overnight do. I wouldn’t waste the extra time, especially since the “dirty” oil is immediately pumped thru the brand-new, higher efficiency filter. In terms of “extending Hyundai engine life”, your efforts likely fall within the statistical noise. You’re not likely going to exceed 3 sigma from the average regardless of the additional oil you remove.

A for effort though

 

[4WD]

Actually, just do.

You put 2 ramps on the ground if you can't get the low front end of a car like my Porsche to go over 4 at once.
My Stelvio, on the other hand, can clear all 4 at the same time, so that car it's easier.

You make it sound like it's actually some odd amount of effort I'm going through.

If you want to buy me a Quick Jack lift instead, I will happily send you my address for delivery.

I’m very familiar with what you can do with ramps, jacks, and jackstands.
Own many - I use four ramps to do driveline and two for oil - but zero interest in jacks or jackstands as part of an oil change - especially considering what this needless mission has turned to as a thread … My reply is similar to Patman’s - start with an EP synthetic and change on the shorter schedule …

 

[4WD]

Fumoto valve and then just reach under car on ground, no ramps.

I can do this on the Tahoe’s as my every other change. Leaving the filter and 1/8 of the oil - 10 minutes and clean job … I have also drained a quart to add EC30 as a booster …

 

[97prizm]

Have you ever taking the oil pan off to see what's actually in that last bit of oil? Seems that would be a much better way to assess the "dirtiness" rather than to try and pump the rest out.

Gail Banks redesigned the oil pan for either the Ford F series powerstroke or GM but can't remember. Apparently those too left quite a bit of old oil at the bottom.

 

[4WD]

Gail Banks redesigned the oil pan for either the Ford F series powerstroke or GM but can't remember. Apparently those too left quite a bit of old oil at the bottom.

Gale Banks does some cool stuff …

 

[Bailey28]

Snagglefoot,

Your pics of the LS oil pan indeed show an area of trapped oil at the bottom of the pan near the drain plug. I can see how that entire pocket of oil would not be drained if you used a device to suck out the oil from the dipstick tube for sure. With that setup I can see why you would want to crawl under the truck to get all the oil out.

If I owned your truck I would add a 2x8 under the ramp opposite of the drain plug to get the truck to sit at an angle. The drain plug would now be at the lowest point.

 

[Snagglefoot]

Snagglefoot,

Your pics of the LS oil pan indeed show an area of trapped oil at the bottom of the pan near the drain plug. I can see how that entire pocket of oil would not be drained if you used a device to suck out the oil from the dipstick tube for sure. With that setup I can see why you would want to crawl under the truck to get all the oil out.

If I owned your truck I would add a 2x8 under the ramp opposite of the drain plug to get the truck to sit at an angle. The drain plug would now be at the lowest point.

Good idea. I contributed the photos to demonstrate that some vehicles also don’t get out every drop. But in the end, I’ve been changing oil without using any clever tricks and the truck, which I purchased new 17 years ago has over 265,000 miles and runs great. I’ll let the other LS owners use the trick! Thanks.