[4ePajero]

M2CW on this "Boere theory" that the Boere used on their old Trekkers and Toyota 2.4D bakkies, is that it is totally unfounded. If there were much truth in this, then the diesel suppliers would add the oil already.

...or the car manufacturers would recommend it as well...I personally believe, the 2-stroke oil theory is a nice fairytale to increase turnover on the 2-stroke oil since there is almost no 2-stroke engines left in the market ,... in fact I heard about first time here in RSA...and never before in Europe.

You should read a bit wider, then.

It is a common "fairy tale" in Australia and even the USA.

If you have the time, go read here on the 4WD Club of Australia. Currently 23 pages!

Even the home country and Europe has in fact heard of it.
Read this forum thread. Currently 22 pages!

There are many more discussions all over the world, if you check all the cross references.

Some commercial diesels actually have a system by which a portion of the engine sump oil is added to the injection system, whilst the sump level being topped up with fresh oil.


"You can fool many people most of the time, but you can't fool all the people all of the time"

Knowledge is power!

[HBannink]

M2CW on this "Boere theory" that the Boere used on their old Trekkers and Toyota 2.4D bakkies, is that it is totally unfounded. If there were much truth in this, then the diesel suppliers would add the oil already.

Now I sit back with my bullet proof on

You are a brave man

This little tip was passed on to me by a racing mechanic in the days of the cosworth lotus and cortina days so it has been around for a few laps. The secret is to use two stroke oil and not sump oil as 2 stroke is a graphite based oil and does wonders for upper cylinder lube as well as cleaning injectors and carbon deposits.

[MR2-Blue]

I understand all the enthusiasm about the 2-stroke stories...and maybe it's common in "down under" and in the US...I'm just wondering why it wasn't teached in my studies in "Wärme-, Kraft- and Arbeitsmaschinen" (Heat-, Power- and Working-Engines, a 1 year lesson focusing on all details of engine types like petrol diesel, steam, stirling,...) in the Technical University in Aachen in those good old days of the 80's... or maybe I just missed it.

I believe anybody can have his/her own opinion on this 2-stroke story - my personal one is just simply: 2-stroke oil is not needed for modern engines in the 21st century....

[4ePajero]

...I'm just wondering why it wasn't teached in my studies in "Wärme-, Kraft- and Arbeitsmaschinen" (Heat-, Power- and Working-Engines, a 1 year lesson focusing on all details of engine types like petrol diesel, steam, stirling,...) in the Technical University in Aachen in those good old days of the 80's... or maybe I just missed it.

Just wait, they will catch on .... eventually!

[RoelfleRoux]

Well gents,
Thanks for the enthusiastic response. I am taking every post to heart, like I did on the 4x4 Community side.
1)There is doubt about the gain to the engine, but no mention of actual damage to the engine.
2)The cat converter is still possibly at risk, but removing it should it pack-up can be considered (warranty dependant). A software jippo-trick could be required.

Bottom line is:
The first little bottle of 2-stroke oil went in last night. The other two are under the seat waiting for the next two fill-ups tomorrow on the road. The mixture is just under 1:200.

The beast started this morning, the cat didn't explode and the fuel consumption to my office (7km with zero traffic) is still 16l/100km.

Mr2-Blue,
The university of Aachen has a special place in my heart, never been there myself, but there is a pretty little researcher there that has done wonderfull work for us over the last few years. So I respect your opinion and training, but am willing to do this experiment (even if only for the hell of it). I must confess, this is the most daring thing I have ever done to any of my Pajeros. Fitting a towbar and roofrack the previous most daring mods.

Regards
Roelf

[CATS]

Roelf,

I would be very carefull of trying this new thing on the PETROL Pajero with CAT on such a big trip, rather leave as is. You don't need clogged catalysers etc.

On a personal note, I have tried this 2 stroke story in my 3.2 DIESEL for one tank and can't report any material negative or positive changes. Maybe one tank was not enough? But I have resolved to just filling up with the pump stuff and leave the rest alone.

In my younger days I owned a Mazda 323 1.3, the ones that was still rwd, which had a redone motor and often bought valve-ease to add to the petrol which was supposed to lubricate the valves etc with the grahite base.

CATS

[RoelfleRoux]

CATS,

If your intention was to scare me, you succeeded!

[4ePikanini]

I don't think you need to be scared. I have used 2 - stroke in my petrol cars for a while now and see no ill effects.

It is the CAT that I would be concerned about. I doubt there will be an issue as 2 stroke burns clean and has a de-carbonising burn property so it might even be beneficial to your cat.

I would not test it over a long trip though to be on the safe side.

Does the tuna 3.0 D4D have a cat because Uys has used 2-stroke oil in his tuna since new and is over 80k and still no issues. ( given the fact that it's a diesel )

[RoelfleRoux]

The remaining two little 2-stroke oil bottles will be removed from under my seat and be stored next to the unused synthetic 2-stroke oil (the scooter hasn't run since my daughter got a car). Maybe I'll try it in the electric lawnmower, seeing that SWAMBO's car also has a cat and the scooter can not go back to mineral 2-stroke (if ever somebody decides to use it again).

So much for my sense of adventure and daring with my Pajero! I rather wish for a safe and boring drive across our country tomorrow.

[4ePajero]

I think you are worrying way to much!

I bet you get the best fuel consumption you've had for a long time.