MQ useing oil?

[drive it]

I'v just changed my oil to penrite light truck oil, 3000km ago it was not useing oil befor then and it has started to use quite alot of oil i have put about 2 to 3 litres in. since. dose any one have any ideas of y this is happening? Its a MQ SD33 81 modle hade a complete rebuild about
30 to 40 thousand KM ago.

[V8Patrol]

is there a "weight" differance between the Penrite and the previous band you were using ??? ie: 20W10 versus 20W40

A change in the oil weight seems the most likely cause and simply changing back may solve the problem, why did you change anyway ???

similar thing explained here .....

http://www.outerlimits4x4.com/PHP_Modul ... highlight=


Kingy

[pigdriver]

i know a bloke changed his diesel patrol over to pennzoil and he nipped up a cylinder and had to replace the sleeve.
I know the plural of anecdote is not evidence but i wouldnt run anything that the USA reckons is great.

[Screwy]

If u would like to know my opinion about Penzoil............... It really is an inspecific recycled oil.
they say that multipurpose oil is for deisels and petrols etc. of all types sizes and uses. It is not possible to make an oil that is really good for a task such as this. They just recycle and filter all your old oil and make a ruff guess as to the wieght and put some chemicals in it to make it run nicely.

The other thing is, if ur car blows white when it starts ( probably ) it is using a little oil here but nothin like wat u speak of.

screwy

[drive it]

i dont know what sort of oil was in it. it was in there when i brought it.

i think the old stuff was in there for quite a while. so i guess it was pritty thick.

[V8Patrol]

Still havent stated what the oils "weight " is ?????
IE:
10w20
20w40
20w50
etc etc etc etc , should be on the front of the bottle !

Any chance of contacting the previous owner and seeing what oil they used ?

Kingy

[giffo]

i too have a MQ diesel and it is using a bit of oil.
What is the best oil to use. Also differant coloured smoke means what????
How often should an oil change (inc. filters) be changed.
What additives can be used to improve the life of an old girl.

Cheers

Giffo

[Screwy]

For the diesel engine i prefer Castrol Super RX, or HPR diesel.
every 5000kms for all filters except air and that can be every 10 000km's.
Blue means burning oil
Black means running too rich ( too much fuel getting into the cylenders )
white means burning raw fuel ( left over in cylenders after turn off, it will do this when u first start it on a cold morning as the injectors in a SD33 commonly drip a little after its killed ).

The only aditive i have found to actually work personally is the really thick engine stop smoke. It works!!!

Screwy

[giffo]

Thanks Screwy,
You are a man of much knowledge!!

Giffo

[Mark2]

could be that the oil is cleaning the motor too much (see my recent post). The Castrol dealer told me that a CI rated oil can cause older motors to start using oil due to the cleaning effect. (I'm not sure how this works)

What was the rating of the oil you used?

[drive it]

Thats what I was told when i rang up an asked about it, that it could be just cleaning the old stuff out.
but its hade to see how i would have to put 4 to 5L in if its just cleaning the engine.
and now its starting to blow smoke which it did'nt do befor the oil change?

[giffo]

I think you guys are right about the new oils cleaning engine out. I spoke to an oil engineer from the mining industry (analyses oils in crusher etc) he said old engines run better on prehistoric oils. New oils are made for new engines with differant runnings etc.
Sounds good to me. At least I now think my motor is OK.

Giffo