When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Both. I consider the washer and the drain plug as throwaways just like the filter. They're cheap enough and I don't want to keep torquing that aluminum plug over and over. As to where, I get them from the dealer. By the time you add shipping costs from the internet, they're cheaper just to drive to the dealer and pick them up. At least for me.
Do you replace the whole plug or just the o ring? Where do you purchase them. Dealer, Amazon or favorite store?
Don't want to have a leak later.
Thanks! Going to do it for the first time.
I'm replacing the oil drain plug, but only because I want a magnetic one.
The crush washer/oil drain plug gasket should be changed at each oil change..it's cheap enough, although some people will change it every other oil change.
I get my oil and magnetic plug and washers from LN Engineering. The Driven oil is supposedly made for DI engines, hence I'm going Driven for all my DI engine vehicles.
Here's a link on the page where I purchased my stuff. https://lnengineering.com/products/d...40-bundle.html
Piwis manual dictates changing both bolts and crush washers.
From experience you need not change bolts unless the female allen holes are rounded. But you NEED to change the washers because the washers get crushed and provide seal. Bolts are not torqued to yield which is when you should change them. But washers are torqued and deformed, that is why they are one time use.
And remember: torque every bolt to spec.
Originally Posted by barrios35
Do you replace the whole plug or just the o ring? Where do you purchase them. Dealer, Amazon or favorite store?
I've always performed my own maintenance and repairs simply because I have full control over the process, and in the case of these dipstick-less engines, if you had the oil changed by a dealer or shop, how do you really know it was changed. It is not like you can pull out the dipstick and check for clean oil.
And nothing I hate more than a messy job, so I make sure I have a kitchen-catcher bag next to the oil filter to drop the filter cover and used oil filter into it, without it dripping all over the place.
Oh and so much talk about rounding out the aluminum drain plug. I use a quality Snap-On bit and I still have the original drain plug in my 2015. The drain plug still looks new and that would be with at least 8 oil changes so far. Not that I need to, but I use a torque wrench.
Congrats on the accomplishment!!! From now on you will start making more complicated stuff.
My 2 cents regarding your questions:
1. A way to gain security on the amount of oil being poured in would be to measure how much oil came out. You can do it buying a 5 galloon water reservoir and store the old oil there. Make some marks in the botlle to measure each 0.5 liter or quart. Then you will know how much to add back.
2. There are 2 dots in the bar. As long as the oil level is between the 2 bars, the car will tell you "oil level is correct". But in case you missed the mark (either below or above) dont sweat at all. Just make sure not to rev the car, go back to your garage and add 0.25 of a quart each time or drain 0.25 of a quart. Just remember, dont rev up the car if you are in the street and go back to your garage.
Best.
Originally Posted by barrios35
Finally did this weekend on my 991.2 4s. That was a lot of oil that came out! Going to need to buy a bigger drain bucket.
Thank you all for the input. Mich appreciated!
Scariest part is adding the oil. Lol! Did not want to over fill.
Where does the green level need to be?
I feel like it should be in the middle and I need to add more oil.
That was a lot of oil that came out! Going to need to buy a bigger drain bucket.
Use the "short" blue 21L recycling bin (17.5"L x 12"W x 7.5"H), obviously one without holes in it. My other Porsche takes 11.5 liters, more than my 991 which takes about 8.5 liters.
Originally Posted by barrios35
Where does the green level need to be?
If your 991.2 is the same as my 991.1, then the difference between the MIN line and the MAX line (4 segments in the display) = 1.8 US quarts or 1.7 liters. So each segment is about 0.45 US quart or 0.425 L. So if you are at your MIN line, you can easily add a 1 US quart or 1 liter. Time to read your Owner's Manual.
And if you drain it, you can easily put 7.5 liters into it and then top up as necessary.
No higher than the MAX line and that is not the last segment in the display. Excess oil turns the display to YELLOW and the last segment above the MAX line is YELLOW as well as shown when it is OVERFILLED (D).
I like mine at the MAX line. When the 3rd segmet is GREEN, add a bit of oil at a time and take it for a drive before topping it up some more. When a segment lights up, you might be at the lower level of it or the higher level of it...you do not know that....the reason for adding very little oil at a time when at the 3rd segment.
Last edited by IXLR8; 08-29-2023 at 06:45 PM.
Reason: typo
Use the "short" blue 21L recycling bin (17.5"L x 12"W x 7.5"H), obviously one without holes in it. My other Porsche takes 11.5 liters, more than my 991 which takes about 8.5 liters.
If your 991.2 is the same as my 991.1, then the difference between the MIN line and the MAX line (4 segments in the display) = 1.8 US quarts or 1.7 liters. So each segment is about 0.45 US quart or 0.425 L. So if you are at your MIN line, you can easily add a 1 US quart or 1 liter. Time to read your Owner's Manual.
And if you drain it, you can easily put 7.5 liters into it and then top up as necessary.
No higher than the MAX line and that is not the last segment in the display. Excess oil turns the display to YELLOW and the last segment above the MAX line is YELLOW as well as shown when it is OVERFILLED (D).
I like mine at the MAX line. When the 3rd segmet is GREEN, add a bit of oil at a time and take it for a drive before topping it up some more. When a segment lights up, you might be at the lower level of it or the higher level of it...you do not know that....the reason for adding very little oil at a time when at the 3rd segment.
I used the "measure the amount of oil you drained" approach. First, check the oil level display and make a note of where the oil level is between the minimum and maximum before draining the oil. I used old, empty 5qt oil jugs as my measuring devices since they have graduations on them for each quart [and some also have for each liter]. I filled one empty 5 qt jug to its 5 qt mark. Then I filled another empty jug with the remaining drained oil, and noted the amount. When I did this on my 2017 C2S with the dash oil gauge initially showing nearly full, after lifting the rear of my 2017 C2S using 6" ramps, and letting the oil drain for about a half hour with the filter loosened and eventually removed, I drained about 9 and 1/4 qts. After installing the filter and lowering the car to be on a level floor, I put in about 8 1/2 quarts before starting the car and checking the oil level, then proceeded cautiously until nearly full, and sure enough, it took just about the same amount as I had measured after draining. But I wouldn't trust those plastic jug calibration/graduation marks to be highly accurate!
05-17-2023, 02:51 PM
