Michelle Jacka posted:

Yes, you will find that there are no treks for areas where we have either not thoroughly travelled, or not recorded appropriately detailed data. As always, anyone is able to submit Trek Notes to us for publication on the site, however they must follow our standard format (see any major trek notes for the heading names).

All treks submitted need to be complete with trek data such as odometer readings and relevant gps points. Text to be sent unformatted, ideally in html or .txt files, otherwise Word or even email will do. Images to be sent as separate jpg images in the best resolution available (no cropping).

Simply send files via email to michelle@itbeyond.com.au

Oziexplorer posted:

Yep, sure is. Glad I bought the new 2.8l diesel which is just coming up for first service. With my enclosed body on the back which is 1.55m high, I am getting a around 9.5km/litre.

Would be good to have the CC of the engine over and above just say 6 cyl ULP, as there is a large difference in engines.

eg: If you put down 4 cyl type ULP and you had a Suzuki 1.3 litre against a Pajero 2.8litre ULP would have far more meaning knowing what CC the engine is. Would also be good to see the make and model of vehicle.

Bob Y. posted:

Joe, The petrol fuel needs are indeed scary, but the amount remaining is even more so. Makes good sense to take some mates with more thriftier diesels.

Exploroz Team - David posted:

Thanks Ozi I have updated the TrekFuel system and have added fields for Engine CC and also comments. This should cover us. It will not be there for the data already entered but all new data will have the new fields.


Thanks for your feedback.
David

Oziexplorer posted:

David - Great 5 star job. Many thanks.

Exploroz Team - David posted:

OK feedback accepted however if we get enough fuel data responses than the averages will work out. It is best to err on the side of caution and this is why I shown each line showing the km/l etc this will allow poeple to make ther own judgement anyway I will think about the engine size version and work out wht this means in terms of programming. Can I build a list of engine sizes - If this is the case then it would be easier. How many sizes are there.

More feedback please and I will see what I can do.

David

Joe posted:

Greg,

I also have the DOHC Pajero, and i have always been concerned over the need for PULP. I have run it on ULP with Nulon octane booster (definitely needed to stop it pinging), but never for more than three consecutive tanks.

I assume that you have to do the same, and have you had any problems as a result?

Greg posted:

David re the engine size list I would suggest you sort the list from largest to smallest. This is a relatively easy prog. task. The other option is to arrange in groups.

Joe re the ULP. I usually run on Optimax or Ultimate (98 octane) but have found no problems with ULP except for a substantial power drop mostly noticed under very heavy load. Pinging has been at an absolute minimum in fact very rare. I have extractors and free flow exhaust.

Exploroz Team - David posted:

Thanks Joe and Greg,
I have updated the TrekFuel system and have added fields for Engine CC and also comments. This should cover us. It will not be there for the data already entered but all new data will have the new fields.


Thanks for your feedback.
David

Steve & Wendy posted:

Hi Greg,

We have a DOHC 3.5 l Pajero and have always used ULP. I guess we have no basis for comparision re power etc. We have had the car from new but have only noticed pinging recently.

Could you please give me more info on "Nulon octane booster" ? is this some sort of additive you pour into the tank ? Where can it be purchased. We are in Perth.

Regards,
Steve.

Joe posted:

Steve/Wendy,

I also ran my Pajero on ULP from new, but after two years it started pinging so I moved on to the PULP (as recommended for this engine) and I haven't run ULP (much) since then.

The fuel consumption improved with PULP so I have not had to pay any extra money per kilometre travelled, but it is a pain outback.

Octane booster is an additive that you can purchase from most large servos or places like Autobarn. It raises the octane level of the fuel and it is this that stops the pinging.

Pinging is actually "pre-ignition" or the burning of the fuel/air mixture before it is supposed to be burnt by the spark from the spark plug.

How does it occur? Well in high compression engines (like ours, although ours are really marginal) it can occur from the heat generated when compressing the fuel/air mixture - rather like a diesel in fact.
It can also occur when there is a build up of carbon in the combustion chamber. This not only increases the compression ratio (by removing a little free space), but also can cause pre-ignition by glowing hot itself.

WARNING - If you let an engine keep pinging it will eventually burn holes through its pistons. There may be other unwelcome results too, but the holed pistons is one that I have personally experienced.

Good luck.

Exploroz Team - David posted:

Thanks Andrew,
I have updated the TrekFuel system and have added fields for Engine CC and also comments. This should cover us. It will not be there for the data already entered but all new data will have the new fields.


Thanks for your feedback.
David