jinjgn: are u a troll...or bot..
Anyways.
my theory: if u do lots of short trips, the engine will burn more oil, cause the engine parts dont reach the max expansion inside the engine. If the engine is hot it seals perfect. For example. If i ride 500 km on the autobahn, my engine does not need any oil at all. If i ride the same distance in like 20 single turns it does use oil. Makes sense for me. What do the experts say!

 

A bot that I reported.

 

Mark,

The last time I drained the turbos it was like about 200ml in total maybe less. So there is only a very small amount and not really worth the hassle of accidentally stripping the plug head. I dont think I will be doing them any more.

 

As a reference, my air cooled cars have 1 Long oil line running from the back to the front oil cooler, then another line from the front to the back. The oil in these lines and the front oil cooler DOES NOT get drained when I change the oil.

My SC has about 200,000+ miles and after these miles from rebuilt, I still have about the same compression.

 

Drained my turbos, used a proper Allen socket on them and cleaned the crud off of the plugs before wrenching them. Got a decent amount out, cleaned the threads, a touch of anti-seize on the threads going back in. Don't want those plugs freezing if you'll ever want to remove a tank since there's a mounting bolt inside! Car took a solid 9quarts to fill, drained all 4 drains completely.

 

thank you for consistently sounding a voice of and with reason

 

FWIW, "996 The Essential Companion" states draining the turbos and comparing the amount of oil drained from each side as part of the engine oil change proceedure. A variation is indicative of a turbo seal leaking.

I always drain mine as it adds less than a couple of minutes to the job and keeps the plugs free.

 

+1.. and,
1500km on Castrol 5w50, still no usage, and LOTS of hard running
another 996tt I'm running on Castrol 5w50 also not consuming...both seem quieter than on Rotella, will be trying another car soon on 5w50...

 

well no doubt the plugs are there for a reason! still think i'll stick with what works for me. and charlie doesn't drain turbo's lol

but hoping my experiences with castrol 5/50 mimic yours. it is as quiet as i have ever heard it at startup, this after one week even w decats. i think it's a tougher oil, like pirelli is a tougher tire lol

 

Comparing oil drained side to side seems silly to me. Those tanks hold oil drained from the turbos and have it extracted by the oil pump. I'd expect the oil pump to be able to keep up pretty well and for the volume passed to be pretty small since turbo bearings don't need much oil. For there to be a significant variance it would have to be leaking a pretty decent amount of oil! I don't think that's a very good reason to drain it out of those reservoirs but I do think draining is worthwhile. (Shrug)

 

I would drain them just to keep them free if nothing else= have fought my share of stuck differential drain/fill plugs and not fun.

 

i guess porsche dealerships have never read the essential 996 companion. just when you think they do everything by the book, they get lazy when they can, and no one will be the wiser for it since no one will ever know the turbos haven't been drained. unless of course the drain plug is seized from never having been turned lol. there IS that.

 

I doubt also it would cause any issues never botheringg as they hold such a small amount but doesn't hurt and they stay free. Just fought a battle with a drain plug on my Audi differential= no fun.

 

I used a touch of anti-seize on mine just to help prevent that. Sprayed a ton of carb cleaner and cleaned it all real good before I even attempted to unscrew mine. I've got a ratchet with the proper size for the Allen as well. Mine unscrewed no problem which was nice. If nothing it allowed me to use a full 9quarts and not have a dribble left in the bottle. Castrol Edge 5w50 I think it was. I'll check to see if I've burned any this week.

 

^ I've just driven hard since memorial day when i changed ( 8 qts since i didn't drain the...lol ) w the edge 5/50. it seems to like it.

gauge hasn't moved from one mark below top. i never topped off since i was checking for consumption short term. that's encouraging.