View Full Version : Petroleum to Synthetic

11-21-2006, 11:18 AM
I bought my car (01 1.8) with 52k miles on it and it’s ready for an oil change. The previous owner used a petroleum based motor oil and I want to convert It to a synthetic oil. Is there a proper way to flush the system so it’s nice and clean?

Also what oil would you guys recommend? I live in Chicago and in the winter the temperature is generally below freezing.


11-21-2006, 11:19 AM
mobil1 0,40

11-21-2006, 11:34 AM
Oil: Red Line 5w 40
Filter: K&N HP 2005

11-21-2006, 02:16 PM
I got a gold filter from Napa, can I used this or should I get a better one?

11-21-2006, 03:15 PM
no, get the Mann or Mahle improved version. audi issued a service bulletin a while ago to use these.



if you really want to clean out or flush the oiling system you have to drop the oil pan. clean it out with solvent and rags. then probally use some seafoam for the first oil change.
if the previous owner used conventional oil in the 1.8 turbo the probability of sludge is greater. i know the fwd 1.8 oil pan is a time consuming bitch. i believe the awd version is easy, but have to confirm this with someone with genuine experience with this model.

with oil it is important to know that in wide viscosity 5w-40/10w-50 they use more polymers then in 5w-30/10w-40 to achieve the wider range. more range = less actual oil per volume. the polymers more then the oil are the culprit in sludging....food for thought.
it is recommended to use the most narrow range that will be suitable for mean seasonal temperatures.
with our summers being rather mild lately around chicago i opted for 5w-30.

11-21-2006, 04:37 PM
the napa gold is fine, it's about 1/8 qt smaller than the large capacity oem filters

11-21-2006, 10:48 PM
The Napa Gold 1333 is a big mother. It looks like a Nalgene bottle.


11-22-2006, 12:30 PM
what does napa want $$ for that unit?

11-22-2006, 12:41 PM
like 10 bucks.

also known as purolator L40316 (double check this but im 95% sure)

11-22-2006, 02:15 PM
52k on non synth... hmm, maybe you should think about this too

SLUDGE LINK (http://www.audizine.com/forum/showthread.php?s=&threadid=105429)