luanta

Hello Everyone, I am a newbie with an 2004 C4S. I've been trying to read up on the different types of oils used in 996's. I've read so many different views on what to use ( M1 0w-40, Castrol 5w-40, Motul 5w-40, M1 15w-50, M1 Delvac 5w-40 etc.) I have always said that the "Proof is in the Pudding". Who has the highest milage 996 with original engine and what kind of oil are you using?

dotframe

ogun228

Why not trust the manufacturer's requirement Mobil 1 0w40? Don't you think they know best?

wyovino

luanta

I do trust manufacturer recommendation 0w-40. In my previous Mercedes I trusted the manufacturer's recommendation of a sealed system for the transmission. Only to later changed to a recommended 60,000 mile trans oil change after a series of vehicles came in for a broken transmission after the original warranty had expired. I currently have 2 other Mercedes along with this C4s (this being my first Porsche). I've learned my lesson many times before and have traded in to many MBenz and Bimmers due to the manufacturers changing their minds. I want real world numbers. Proof is in the puddin folks. Thank you.

Stephen Tinker

Here we go again - but its my turn to jump in......
Minimum 5W40 weight, oil changed every 5,000 miles (8,000km).
Forget SAE requirements, look for the European ACEA A3/B4 specs - far more stringent than SAE.
I personally us Shell Helix Ultra 5W40, but I believe its difficult to source in the US....
Check out the LN Engineering website for more details,

hopeydaze

Response from the UK. Some independents here are recommending Mobil Super 3000 5w-40.

And we don't change our oil as often as you do

Ubermensch

I follow the manual. 0W40 Mobil 1, and I change every ~10k (occasionally sooner based on circumstances). My oil analysis comes back clear and I have 115k miles on the original engine.

-Shawn

Dharn55

Let me see the manufacturer's recommendation was Mobil 1 0W40 with a 15,000 mile change interval. Well that's one reason I don't follow it, does anyone really agree with a 15,000 mile interval? Also in the manual that came with my car 0W40 is not even listed, but was later in a TSB.

The ZDDP in Mobil 1 was reduced sometime in the last 10 years.

I run Castrol 5W40 in the winter and 5W50 in the summer, change the oil every 3,000-5,000 miles.

Dennis C

I'm at 109K miles on my original engine. I've always used Mobil 1 5W40. I typically change my oil at around 7,500 miles.

I've read about the changes to Mobil 1 over the last decade. I still think it's an excellent motor oil, but it's not the same as it used to be. My independent mechanic now recommends Schaeffer synthetic oils for Porsche vehicles. I haven't used it in the 911 yet, but I am running it in the Cayenne.

jyoteen

128k miles, Mobil 1 10w40 High Mileage oil.

francars

My Indy (Porsche mechanic for 30+ yrs) uses ONLY redline as he says the same about Mobil 1. I have been using it on my 996 and previous 986. Great oil

My CTT has 65k miles and according to previous records from owner and now me was using Mobil 1 as well. I might be changing this year to redline on the next oil change

logray

kromdom

me too.....might actually run to the store to grab one more box.

Pac996

How can I tell if the pop corn has veg oils or real butter?