Oil change question. 2009 C4S
05-04-2019, 01:23 PM
#1
Racer
Thread Starter
Oil change question. 2009 C4S
I drained the Mobil 1 super dry, and I’m up to 8.5 quarts of DI40. I’m reading the low box inside the fill zone. Should I continue to fill to middle box or call it a day?
05-04-2019, 01:48 PM
#2
RL Community Team
Rennlist Member
Rennlist Member
FWIW, my '09 can take 9 quarts or more... but, I can get flaky readings after an oil change. I recommend driving if for a few days then re-checking.... Let it be for now... One of my "to dos" if I had money and time fall from the sky, is to swap out that measurement device in the oil sump. It is really easy and can be accessed from underneath next to the drain plug... anywho... I am not saying yours is malfunctioning, but I can get flaky readings after a change.
More here: https://rennlist.com/forums/997-foru...-9-quarts.html
Peace
Bruce in Philly
05-04-2019, 02:18 PM
#3
Racer
Thread Starter
Thanks Bruce! Week much better now. At risk of being flamed, I drained till it stopped dripping, then I got in, turned the key and immediately shut it off. It drained oil for another 5 minutes after that. It didn’t explode...
2009 C2S 133K miles
FWIW, my '09 can take 9 quarts or more... but, I can get flaky readings after an oil change. I recommend driving if for a few days then re-checking.... Let it be for now... One of my "to dos" if I had money and time fall from the sky, is to swap out that measurement device in the oil sump. It is really easy and can be accessed from underneath next to the drain plug... anywho... I am not saying yours is malfunctioning, but I can get flaky readings after a change.
More here: https://rennlist.com/forums/997-foru...-9-quarts.html
Peace
Bruce in Philly
FWIW, my '09 can take 9 quarts or more... but, I can get flaky readings after an oil change. I recommend driving if for a few days then re-checking.... Let it be for now... One of my "to dos" if I had money and time fall from the sky, is to swap out that measurement device in the oil sump. It is really easy and can be accessed from underneath next to the drain plug... anywho... I am not saying yours is malfunctioning, but I can get flaky readings after a change.
More here: https://rennlist.com/forums/997-foru...-9-quarts.html
Peace
Bruce in Philly
05-04-2019, 08:45 PM
#4
I have done 17 oil changes over 85K miles on my 2010 C4S PDK. Every time I've drained 7.5 quarts and added 7.5 quarts. Before and after measurements have always been one bar up from low.
I prefer low as to high to allow for thermal expansion (more than you would think) and because I believe it is easier on the AOS.
Hooked on Driving suggests you run low on a racetrack ... It's in their preparation advice.
I changed the oil a week ago but before adding the first 5 quart jug of Mobil One 0-40 I put 16 ounces of MoS2 into the jug. Then I put a half jug in after that, failing to account for the extra 16 ounces in the first jug. I ended up at the full bar.
In other words ... Be very cautious if you add more. You do not want to be over filled!!!
Then again, for reasons not proven (MoS2 is a magic elixir our oil level matters), my oil temperature now appears to be 20F lower than in the past.
I prefer low as to high to allow for thermal expansion (more than you would think) and because I believe it is easier on the AOS.
Hooked on Driving suggests you run low on a racetrack ... It's in their preparation advice.
I changed the oil a week ago but before adding the first 5 quart jug of Mobil One 0-40 I put 16 ounces of MoS2 into the jug. Then I put a half jug in after that, failing to account for the extra 16 ounces in the first jug. I ended up at the full bar.
In other words ... Be very cautious if you add more. You do not want to be over filled!!!
Then again, for reasons not proven (MoS2 is a magic elixir our oil level matters), my oil temperature now appears to be 20F lower than in the past.
