I'm about to Auto-RX my A4 and I have a few questions?

I know I have to change the filter out when I put in the auto-rx but can I keep the syn. oil that is in there currently (it won't run pass my 5000k change mark)? When I rinse what oil would you guys suggest? I was going to use Castrol GTX 10w30, is that ok?

Thanks

 

What kind of car is it? If you have an A4 1.8t (which most of us here do), you better be using synthetic. Dino oil (non-synthetic) will cause engine sludge to build up in your 1.8t, and will eventually lead to engine failure. Any of the oils on the link are approved for your Audi:

http://www.audiusa.com/etc/medialib/....0004.File.pdf

Most of us here use either Castrol Syntec, Mobil 1, or Royal Purple. Do a search. This topic has already been discussed to death.

 

Darn, and for a second I thought he made a typo and meant to say "Couple of Auto-x questions"

 

You have to dump your synthetic and use regular oil... it says so right on the Auto RX bottle, doesn't it?
Auto-RX doesn't mix well with synthetic... so just run some regular oil, ideally 5w40 or 0w40, until you're done with the RX treatment. Then go back to full synthetic.

 

It doesn't say that synthetic is needed for the clean, its say DYNO only for the rinse that is why I was I wasn't sure.

Thanks

 

I have a 1.8 but I don't think you can use syn. oil with auto-rx I normally use Lubro Moly.

Thanks

 

wtf is auto rx? is that like x-lax for cars?

 

its a sludge cleaner www.auto-rx.com