[dave]

Hello all, Great forum, what a wealth of info. First let me say thanks for sharing all of your collective knowledge. I have learned more than i could have imagined in the past week.
I took delivery of a 2004 V8 a week ago (300 miles so far, nothing bad yet Hehe) and I found this forum a few days ago, so pardon me if this topic has been discussed before. This will be my first post.
After the vehicle is parked for a short time, the oil temperature cools down even though the coolant temp. is still pretty much normal. One would think that the oil would stay warm longer, even after the coolant(block) has cooled off. For example, after being parked for 1/2 hour, the coolant temp. reads 150-180 degrees and the oil temp. is all the way down to the minimum. Is the oil cooling system that efficient or am I missing something? Do others experience the same thing?

 

[TREGinginCO]

I'm no expert, but I believe motor oil dissipates heat rather quickly, so that may be why you're noticing that.

 

[mattw]

I'm a new TReg owner and had a question regarding oil change. (Sorry to hijack this thread). Everyother vehicle I've ever owned said to change oil at 3,000 miles under normal conditions. The manual from VW says every 5,000. Is this OK to do or should I stick with the usual 3,000?

 

[TREGinginCO]

The days of changing oil on a vehicle every 3k miles has really come to an end.

VW recommends changing the oil on the TOUAREG at 5k, 10k, 20, 30k etc. under normal use. Basically, once you've had your 10k service done, your oil change intervals are every 10k miles.

The best service interval recommendation to follow is what the manufacturer for that vehicles says.

Hope this helps!

 

[mattw]

Thanks for your help!

 

[dentmac]

When the engine is stopped , the oil pressure goes to zero and the oil runs to the pan. The sensor is now measuring air temp inside the engine . The oil temp is higher than water temp, so the oil sensor reads minimal. On restarting the engine the oil shows warmer again. The oil in the pan will drop from 300-400 degrees quicker than the engine water temp drops from 200. Also the water temp is controlled by a thermostst. The rad may be cool, yet engine at normal operating temp.