ARX: Very high oil consumption - Jetta 1.8T

[JonT718]

Car: 2001 VW Jetta 1.8T with 153K miles ,


I'm about 2400 miles into my Auto-RX cleaning phase cycle. I used the fast track program which involves 2 bottles of ARX in conjunction with Rotella T6 5W40. So far:

I have changed the oil filters twice in the last 2K miles (1 filter change per 1K miles using big Passat filter).

I have had to top off the oil about 3 times. I last topped it off about 300 miles ago and the dipstick shows is less than 1/2 full from the median mark or about 2/3 qt gone).

Is this normal during the cleaning phase? My Jetta used to burn about a quart every 1.2K now its burning thru oil at 500-600 miles/qt. What gives???

 

[zyxelenator]

did you use T6 before? I had bad consumption before. Not sure due ARX or not, since I could not measure oil level before ARX treatment.

 

[JonT718]

Yea I've used T6 extensively on the Jetta but switch to M1 OW40 during the winters.

So do you still get bad oil consumption?

 

[zyxelenator]

no, but I've done lots of thing to correct it.
Check you PCV valve and hoses, maybe some crud got loose and clogged valve and hoses. I think ARX guys mentioned that it can lead to more consumption first, that it will stabilize.

 

[oilboy123]

From all that I've read on RX I would not worry about consumption......
I would be concerned if it is consuming oil after all treatments. Then I would try other oils......

 

[Bayman]

Originally Posted By: JonT718
Car: 2001 VW Jetta 1.8T with 153K miles ,


I'm about 2400 miles into my Auto-RX cleaning phase cycle. I used the fast track program which involves 2 bottles of ARX in conjunction with Rotella T6 5W40. So far:

I have changed the oil filters twice in the last 2K miles (1 filter change per 1K miles using big Passat filter).

I have had to top off the oil about 3 times. I last topped it off about 300 miles ago and the dipstick shows is less than 1/2 full from the median mark or about 2/3 qt gone).

Is this normal during the cleaning phase? My Jetta used to burn about a quart every 1.2K now its burning thru oil at 500-600 miles/qt. What gives???




Have you contacted auto-rx, I believe you can either e-mail or call them on the phone.

 

[JAG]

My 1.8T got clogged PCV system before and I had to replace many of the hoses which includes valves too. I hate to say it but the lanolin esters (semi-solid) can clog valves and small openings. I found them in the PCV system so highly advice against ARX in 1.8T engines. Check the hoses that you can and look for build-up. If you see quite a bit, then the system is probably clogged somewhere.

 

[expat]

Originally Posted By: JAG
My 1.8T got clogged PCV system before and I had to replace many of the hoses which includes valves too. I hate to say it but the lanolin esters (semi-solid) can clog valves and small openings. I found them in the PCV system so highly advice against ARX in 1.8T engines. Check the hoses that you can and look for build-up. If you see quite a bit, then the system is probably clogged somewhere.



With a sudden increase in consumption I too would suspect the PCV.
Remove what hoses you can, clean it out with solvent, or replace.
Should this thread not be in the Additive section?

 

[JonT718]

Yep I checked some of the pcv hoses they are caked in oil, valve cover gasket has oil all around the edges.

Keep in mind I had the pcv valve, breather hose, check valve, upper/lower hoses replaced about 40k miles ago.

I think the ARX might have amplified the problem. Can I simply replace the pcv and check valves? or do the hoses need to be removed/cleaned as well?

 

[HTSS_TR]

You should either clean the hoses if if it still in good shape, otherwise replace those hoses.