I gave you my suggestions a few posts above.

I mean suggestions with the cleaning part....

Not sure how well it cleans, but there is quite a following for the German Castrol European Formula 0W-30 oil. In fact, there is an entire FAQ devoted just to that oil.

http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=718643

You could try AutoRx. You'll find more info about it in the Oil Additives subforum here on BITOG.

This company sells a full syn. VW 502 approved oil for $5.28 a qt. delivered

http://stores.ebay.com/matrixlubricants

Never heard of them before. Wonder who blends their product for them. I see the ebay site links to their web page.

I was thinking about Auto RX but the problem is my car strongly requires synthetic oil with 502.00 oil standart approval. Auto Rx is best working with dyno oils and if have to use synthetic they recommend just Group III synth. oils to avoid competing chemistry. So can somebody recommend me group III synthetic oil with 502.00 specification which I can use for both phases?
I have learned about oils a lot since I bought this car but I am not so sophisticated as many of you guys in this forum and even I am able to find oils with VW 502.00 standart approval I just can not figure out to which groups those oil belongs to.... I called Valvoline customer service to tell me which of 502.00 approved oil belongs to group III but was told that all the oils they make are blens of different groups... So I am REALLY looking for good advice...Thanx
PS: Sorry for gramattical mistakes in all my posts ...I am not from United States..I just live here temporarily....
PS2: for all of the above mentioned reasons I wanted to use Pennzoli Platinum European formula 5W30 which is 502.00 approved and (according to Pennzoil) does the cleaning job....

You're no longer under the manufacturer warranty, so you shouldn't be that concerned about sticking to 502.00 spec. If you're so concerned about sludge, then running a non-502.00 oil for a few thousand miles is not going to cause you problems.

I was in a similar situation with my 530i. I ran PP 10w-30 with ARX, even though that PP does not carry the BMW LL-01 spec.

Where are you from, Jozef?

Thanx for your advice...
I did not want to take a potentional risk and run my Passat with no approved oil without any significant problems with the car, but according the circumstances it's looks like I don't have any other options so (for the piece of mind) I am going to do it....
PS: I am from Slovakia (Small <but very beautiful> country in the central Europe - just 5 million people lives there....)

How about using Rotella 5w-40 syn? That will contain more detergents and zddp than PP not to mention the better base stock.

Before you jump on ARX, is it possible for you to maybe take off the valve cover or drop the oil pan to visually inspect if you really have sludge? Maybe you have nothing to worry about. How many miles on the engine? Are you experiencing any issues? How often are you planning to change the oil?

I am not experiencing any issues... The car has just 58000 miles on the odometer.... but since I don't know oil changes history and needed to replace oil cooler already (There was a leaking and in this car if it leaks between the oil and the coolant, you get oil in the coolant and coolant in the oil...)So I just want to do anything to prevent any possible damage...
I was thinking about taking off the Valve cover but it's not always guaranteed that you can see it there (even there is sludge building up in the engine) and dropping of the oil pan can be expensive... but probably will do it anyway .... and will see... and decide after.... It's certainly best think I can do...

How often are you planning to change the oil? Every 3000 miles...

Jozef, I sent you a PM.

Auto-RX or a high mileage oils would be enough to clean that. Pennzoil Platinum euro than you are after is a Group 3 oil in anycase. Try something in the Motul or quartz range. And why not just use the 5w40 version ? http://www.epc.shell.com/Docs/GPCDOC_X_cbe_24855_key_140002098029_1CE4.pdf

That would be their mainstream target oil. I have seem 5w30 version here in Australia http://www.pennzoil.com.au/products/2008/petrol/pz_products_saps_5W30.asp but its a low saps version.

Also, have you asked the local dealer about it ?

Forget all this hype. Go and buy some Mobil 1 0W-40, currently called European Formula in the U.S. This will do anything and all and plus any benefits of any PP formula. Price is competitive and it also cleans very well.