Jaak Lepson

Folks ... a friend of mine owns a P-Car garage and I have looked under every Porsche that has gone up on the hoist when I visit, old or new (2001). There is ONE thing in common with them all If it does not leak oil, it's not a Porsche! All P-Cars leak!!! Does not matter how old or the model ... they leak, PERIOD!

Jaak Lepson (with oil leaks)

OriginalSterm

My oil leak got really bad for a couple of weeks, right after my first oil change after buying the car. I had to use a crappy Purolator filter and I had a problem with my oil light always coming on for a warm/hot start. Next change I used a Mahle filter and the light doesn't come on, nor does the car leak oil (any more than a 944 variant should).

Mobil 1 since I bought it, Mobil 1 till I kill it!

On a side note, can the oil pressure sending unit leak while still working properly? (5 bar when cold, 3.5 bar when hot, no bouncing or wandering)

toddk911

"Yes you can switch back, but why?"

Sythetic oil runs cleaner and with less break down than non synthetic thus drawing more attention to leaks that the "more gunky", for lack of a better term, oils help to cover and/or clog.

Also, I like many others have mentioned, had no or only a few pin drop leaks, swtiched to synthetic, regardsless of brand, and now have more leaking. This was noticed directly after the change to synthetic.

Take a very old, beat up car/truck that has a couple of little leaks and do then run synthetic, YOU WILL HAVE MORE OR MORE NOTICABLE LEAKS. Almost guarenteed. I have had this happen to me and many other friends. Only seems to be an issue on older vehicles. It is usally the seals going bad, hard, dry rot, etc.

I have noticed running a quart of Marvel Mystery oil seems to help. I was told it treats and/or "swells" the seals and thus reducing leakage.

Jaak Lepson

Gee ... if it "fixes leaks", what does it do to the rest of the engine?

Face it, P-Cars leak ...........................

Jaak (No Flame Intended) Lepson

Jake951

My 951 must not be a Porsche. It does not leak oil!! What's wrong with my car??? (Mobil 1 almost from day one)

Jake951

EDIT: Duplicate message deleted.

Jaak Lepson

Maybe change your glasses?

If you look you will find leaks ...... unless you cheated and had it rebuilt recently.


Jaak Lepson

tifosiman

Mine doesn't leak!

(But that is because I switched it from dino to Mobil 1 right after I bought it and it sprung leaks from everywhere. Almost every seal/gasket ended up being replaced)

Tifo

Stefan

Mine leaked quite a bit too until I did the full engine rebuild. I now run synthetic mobil 1 with no leaks (so far.. 25,000km later)

My mechanic said it didn't realy matter from his perspective whether I ran synthetic or dino after the initial engine break-in period whicih required dino. I figured I can run the synthetic longer and it may resist high heat breakdown better so I went that route.

There's an oil FAQ on here somewhere that's very good if you search for it.

tecart

the oil pressure sending unit can work perfect and leak for sure, its the seal at the end that leaks when it screws on too tight or to loosely, i had a leak there once too

reactor2

I think leakage is directly proportional to the amount the car is beat on. Anyway, has anybody tried contacting Porsche directly and asking them if Mobil 1 causes any problems in the 951 engine?