Siphon oil change

[FistLaw]

Just performed my 50k oil change using a siphon pump. Holy cow is that simple and quick. From what I can measure I removed ~4 quarts. According to the manual I'm about .2 quarts shy of all the oil.
Has anyone measured quantity removed during an underside, traditional, drain plug pulling oil change?
Want to make sure I'm not missing too much by siphoning.
Thanks

 

[40X40]

Just performed my 50k oil change using a siphon pump. Holy cow is that simple and quick. From what I can measure I removed ~4 quarts. According to the manual I'm about .2 quarts shy of all the oil.
Has anyone measured quantity removed during an underside, traditional, drain plug pulling oil change?
Want to make sure I'm not missing too much by siphoning.
Thanks

When changing oil with the TOPSIDE method (what you just did) remove the oil filter first. This lets the oil drain into the pan where you can suction it out.

Also, suction around the bottom of the filter and you will be able to suction oil out of the oil cooler as well.

1. Warm up the oil.
2. Pull the oil filter.
3. Suction the oil cooler located under the oil filter. (in the cavity the filter was in)
4. Suction the oil sump (pan) through the dipstick tube.
5. Replace the oil filter. (pay attention to the O-ring in the lid)
6. Fill the engine with oil. (hold back 1/2 quart/liter)
7. Start engine, observe oil light goes out.
8. Check for leaks. (oil filter cap... if O-ring is fubared)
9. Check oil level, add oil if necessary.

Look in your owners manual, it will have a list of things you need to check at each service interval. Get out your flashlight, inspection mirror, gloves and anything else you need and LOOK THE CAR OVER. Poke, prod, pull, push and shake... be thorough.

I likely left something out.....

Have fun, have a beverage.... Smile!

Bill

 

[wilcharl]

I enjoy a topside oil change. This said as others have pointed out, it does not substitute for a good under car inspection.

Also make sure the oil is good and warm, otherwise its like sucking out syrup and your likely missing stuff

Some models have a windage tray so make sure your at the bottom of the oil pan when you extract the oil

 

[FistLaw]

Thanks Bill.
In looking at the position of the drain plug on the oil pan I have to wonder how close topside is to underside drainage.
Have you ever measured total drainage underside?

Thanks

 

[wilcharl]

I've never measured but I did find a negative consequence.

Inevitably you're going to lose a bit of oil when you pull the filter. In a normal oil change the belly pan would be off in this oil would go to the ground.

By leaving the belly pan in place during the oil change the oil that would normally hit the ground Calex in the belly pan and you will find yourself cleaning your belly pan when you do the must needed inspection that you should be doing the same time you do your oil changes.

I am still proponent of doing the topside as it is less messy in my view at least for me


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[40X40]

Thanks Bill.
In looking at the position of the drain plug on the oil pan I have to wonder how close topside is to underside drainage.
Have you ever measured total drainage underside?

Thanks

Several other members did so sometime in the past. (2006-2009 +/-) The posts exist if you want to hunt for them.

It kinda balances out since you can suck out the oil cooler using the topside method vs. getting the last drop via the drain plug but missing the cooler contents.
So it turns out to not be that big of a deal....

Bill

 

[30_Yr_Dsl_Veteran]

I wish my Smart car CDI had a bottom drain. It is a PITA taking forever to try to suck it out, and you never really know if you got it all.

 

[Tuco]

It's a good idea to jam some wadded up paper towels underneath and around the opening of the oil filter canister. It is a tight squeeze to remove my filter, so a few drops are inevitable.

If you know precisely how much oil your engine takes when it's empty, you will know immediately if you didn't get all of the old oil out of the engine.

I'm a big fan of the top-down method, but I also use one of those magnetic drain plugs, and let the local mechanic change the oil through the pan every 3rd oil change. That way any metal shavings are also removed.

 

[Tuco]

Also keep in mind that 1 liter = 1.056 quart. Every VW 507.00 oil I have found is sold in 1 liter or 5 liter containers.

The local VW dealership has never figured this out. They overfilled my engine at 10K, 20K and 30K miles, so I don't go there anymore.

 

[30_Yr_Dsl_Veteran]

That way any metal shavings are also removed.

Does not matter if they harmlessly stay at the bottom of the pan or not - think about it!

 

[gerrywac]

You do get more oil out from the trad method but it's not something to get concerned about as the VW approved method in the service manual (ELSAWIN) is to use vacuum extract via the dipstick tube after removing the filter cap although they do give details of the traditional method.

There is apparently a valve in the filter bowl that opens with the cap removal so the bowl contents drain into the sump,

As mentioned the top method is quick. clean and simple (once you buy the pump) compared with the old method whickh requires removal of a dozen Torx screws to pull the under-body tray and the sump plug. A new copper washer is required when replacing the plug

 

[MyAvocation]

Good info on the filter valve, Jerry, thanks!

 

[Lightflyer1]

Top side oil changes don't negate the need to remove the belly pan and do the inspections required.