Pajero Owners Club of South Africa

I'm still glad that I used the 2-stroke oil in my petrol and have NO doubt that it cleaned and lubricated the valves and upper piston-bits. There was also a noticeable saving in fuel - something I didn't expect and it wasn't the reason I used the oil in the first place.

I have used 2 tanks of a 200:1 mix in my newly acquired 2000 passat 1.8T.

It has pre and post O2 sensors to monitor CAT operation.

It hasn't beeped yet.

The CAT has 265'000km on it already.

Pikanini,
Are you going to persist with the 2-stroke oil in your Passat? Please confirm that the 1.8T is a PETROL engine!
Are you convinced that the Cats have not been ripped out by previous owner?

Would you mind terribly much if I sit on the sideline and wait and see what happens to your Passat CAT?

RoelfleRoux wrote:Pikanini,
Are you going to persist with the 2-stroke oil in your Passat? Please confirm that the 1.8T is a PETROL engine!
Are you convinced that the Cats have not been ripped out by previous owner?

Would you mind terribly much if I sit on the sideline and wait and see what happens to your Passat CAT?

It is a 1.8T petrol



I am indeed going to continue using it. The previous owner had the vehicle from 10'000km up until I bought it at 260'000km.

He had headwork done and had the control arms replaced 30'000km ago. Other than that the car is stock and has the OEM CAT and shocks.

I'm not an oil expert but from the decarbonising properties I have seen from 2-stroke mixes I have a hunch it might extend the life of the cat and clean off all the gunk accumulated from dirty fuel.

If the cat is out of spec the "check engine light" will come on as it has pre and post cat lambda sensors.

It is worth the risk for me. If the cat packs up I can replace it with a straight pipe and I have a VAGCOM cable to tell the ecu to stop checking it.

Thanks,
I'll keep an eye on your cat and maybe soon start with 2-stroke again.
Cheers
Roelf

Maybe I should pull the CAT at 300'000km and see what 40'000km of 2 stroke mix did to the CAT. Just for interest sake. We'll have a look closer at the time.

Will a visual inspection be good enough to see damage or non-damage to a CAT?

There is something strange about the CAT's in the VW 1.8T petrol engine.
When my friend bought one of the first 1.8T Audi A4's a few years back, he was told that it had no specific fuel requirement. ie. It could run on either leaded or unleaded fuel. This made us think that the visible box near the manifold was not a proper CAT but perhaps only the box used as a dummy CAT to save costs. At that time it was not compulsary for cars to have CAT's.
Just a thought.... Use it don't use it.

I do find it hard to believe that a CAT can still be good after 260'000km but then again I have heard of passat 1.8T's throwing codes and going into limp mode after the CAT has been removed.

Two stroke oil is only to be used in two strokes because of total loss lubrication,the oil is mixed with the fuel or on the later jap engines a small pump to feed the bearings,do not under any circumstances mix or add two stroke oil to any engine be it petrol or diesel,you are asking for trouble.

That is a pretty clear position on 2-stroke oil.