Christopher Zach

So I finally got around to changing the oil on the 86.5 928S. I ordered a Mahle filter, then tried to take the car to Jiffy Lube because I hate doing my own oil. It's messy. They couldn't do it because the car is too low for their bays, so I drove it home, got 8 quarts of 10W40 oil, got the car up on the ramps (are there really low slope ramps anyone recommends? Mine are steep so I have to have the car go up on a 2*4, then another 2*4 then a 4*4 then 1*12 on the ramps to get the spoiler to clear), got the 10 quart oil drain pan from the garage, set everything up.

First problem was the oil plug, it was in so tight I had to use a large socket wrench to loosen it. Finally came loose (the PO was a real idiot) and I realized it didn't have a crush washer. Great. Took it off.

And oil poured out so fast it overtopped my drain pan and went all over the driveway. What a complete mess! I think I dumped about 3q, so I went in, got the dishwasher soap, and broke it up.

Swapped the filter (hard hand tight, then 1/8 a turn with the oil filter wrench) checked the plug (no filings under a 4x loupe), put the washer plus plug back on (how it didn't strip is beyond me), filled it up with 7 quarts, started, got pressure after a few seconds, and got the car off the ramps. Next up is to get the car on level ground and top it off.

But it's just funny how even the simplest things have surprises on this car. Next step is to get the hood stripped and repainted, then maybe start on the vacuum servos that are bad (footwell, defrost, and comb). Still not sure how to get the servo tops off....

SeanR

Who recommended you use 10w-40 in that?

Wisconsin Joe

I use ramps I made myself (off of a pattern I found on here; https://rennlist.com/forums/928-foru...r-the-car.html post #9).

2 x 10 board, cut into 3', 2' & 1' lengths, drilled holes & screwed it together. Give a bit less than 6" of lift, which is enough for me to squeeze under and reach the drain plug. Low enough to go under the spoiler without any issues.

dr bob

Christopher Zach

Me, standard go-to oil. I do not like synthetics.

SeanR

Ok.

merchauser

Big mistake! drain it out.

SteveG

This car was never intended for the DIYer. I use the black plastic ramps from Pep Boys or was it Harbor Freight. I use a 6" x 4" x 3/4 block as a riser on the ground prior to the lip of the ramp, but your spoiler may not need the extra help to get on the ramp.

Christopher Zach

Really? I checked the manual and 10/40 oils are rated from the 90's (F) down to about 0 (F). A 20/50 oil is rated from the 20's to well over 100F. We do have cold winters sometimes, and I've worried a bit more about running the engine cold with too thick an oil. Normally I wouldn't run 20/50 in anything other than a very high mileage engine like my 944S (230k) instead of the 111k on the 928S.

But if this is that big of a concern I'll drop it next weekend and call it an oil flush-out. Worse things have happened.

Filter is the Puralator $5.00 special from Wally-Mart. Oh no wait, I put that on the Prius, there's a Mahle OC46 on the 928S...

AirtekHVAC

Adamant1971

+928

I have found that Castrol GTX 20w50 plus 1.5 bottles of hyper lube zinc additives keeps my lifters happy.

Since the 10w40 is already in I would run it a bit and then drain, think of it as an engine flush.

Speedtoys

10-40 is oil weight.


Not its compositon.

Christopher Zach

Sure, two different thoughts in one sentence. Standard is what to use in my climate (not too hot, can get somewhat cold) which maps to 10/40. Don't like synthetics is a bit of a leftover from 914/911L days where leaks were more of a problem.

I don't race/track the 928S, and the highest I have gotten the engine temp is between the two bars. I'll have to check that out sometime and see what temp the water is at.

Red Flash

Ramp

Back to the top - I'm still trying to find a way to avoid this and have come up with a few funnel designs - it's even more difficult when doing it on a lift. But at least there is only one hole - on the 911 you need to drain the crank and the oil tank. The tank has a large plug and the oil pumps out horizontally and you need to guess where to put the bucket.