2qwik4u

I just checked after my first 200 miles of ownership. I assumed mechanic checked when he did PPI 2 weeks ago. Oil level was at very tip of dip stick. Could damage have been caused already. I immediately added 2 quarts of synthetic, Im not even sure if the oil in there was synthetic(is this ok?). After adding it went over max line(is this ok?)
last oil change was 500 miles ago.

Please help!

2qwik4u

BTW I checked oil when car was cold, I screwed up didn't I ? Now I might have to much oil in car, what do I do?

psychoideas

Drain the 2 quarts out.
Must be checked when hot, engine running, on level ground and after idling for a couple of minutes.

Good luck.

flatsixnut

^what he said....plus, do some research on type of oil to run in these older cars.
From everything I have read...I would stay away from the "sin"thetics.

Brads911sc

do NOT try to drain the two quarts after you have gotten it hot... Dont ask me how i know. You will be draining all 10 quarts or so that you have in your tank if you try it...

2qwik4u

so...how do I drain just 2 quarts, BTW its about 1/2 inch above max line is this bad?

Jay Gratton

That is REALLY bad. You are going to have an wicked smoke show if you run it. You now need to have an oil change! What year is the car? I would stay away from the synth. oil as well if it is a 3.2 or older.

2qwik4u

yes its an 88. I am panicking guys!

2qwik4u

no smoke so far.

porsche930dude

if you open up just the sump drain after it has been run but cooled down a bit about 2 quarts should drain out. From my experiences

psychoideas

Undo the tank drain when cold, drain out two quarts, put drain bolt back in.
Expect to get oil on your fingers.

You can suck it out of the filler neck if you like.

2qwik4u

Thanks Frank!

How do I suck it out of filler neck?
My other problem is the 2 quarts I put in were synthetic(thats what I had laying around) I was unsure what was in there in the first place. Would mixing synthetic and non cause damage?

flatsixnut

If it was me I would drain it all out. Both from the sump drain and engine drain. Then put in a good 20/50 weight oil. I use Valvoline. Brad Penn oil is highly reccomended here as well.

imcarthur

The big thing to remember is that these are OIL COOLED cars. The oil level & quality of oil is important - long term. Mixing oils won't hurt it - short term. Too much oil will make it smoke & ruin your air filter & oil up your AFM but generally won't hurt much.

I suggest (as above) drain some from the sump (on the engine), get the level right & plan for an oil change in the next 1000 miles to Brad Penn 20w50.

Ian

JackOlsen

Driving wet sump engines gets us in the habit of worrying too much about being a quart low on our cars. On a 911, the original specs called for the engine to be able to run on four quarts of oil (not four low -- four total quarts) so long as the engine didn't exceed 4000 rpm. Outside of track levels of lateral g-forces, you can run a quart or two low without any serious consequences.

That doesn't mean I endorse running two quarts low, of course.

You definitely don't want to run with the level over the max mark on the stick. In fact, you don't want to run it with the oil at the max mark. You want to check it on an idle surface, with the engine running, after the engine is warmed up to 180 degrees or so -- this means you check it after a drive, not before. You want to fill it up to the midway point between the two marks -- not to the top mark.

The danger of overfilling is that the breather lines will suck oil into your intake manifold and you will have a real mess to clean out. If you do a search, you'll find fairly regular posts about guys screwing up and overfilling their oil tanks.

Brad Penn 20/50 is a smart way to go. You'll need crush washers and a filter and a big catch tank if you're going to do the job yourself. Measure the amount you take out when you do the change, and don't add any more than that (usually 9-10 quarts) until you're able to warm the car up and check the actual level again.

Do not use a Jiffy-Lube type service for changing a 911's oil.

I wouldn't worry about having two quarts of synthetic in there. I'd be more concerned about knowing when the other ten quarts were last replaced, and how many miles the filter has on it. Write down your mileage and the level and the temperature when you checked it every time you do a change so you can monitor your oil consumption.