Engine oil staying clean !.( In Appearance)

Technology or something like that....lol


Cheers Axle.

Hey Tippa ever driven a 2.8D non turbo hilux. The landy would kill it LOL. Regards Steve M

Yeah ha ha. Our work had 10 of them. They would pull 5tonne ground power units (for 747s) in low range all day, and clocked up 400,000kms made up of 500m trips around the airport before we got 10 new troopies. Very impressed with their unbreakability and low range torque, but the certainly did struggle to hit 80km/h ha ha.

You are right about the d4ds Steve, they stay all most as clean as a petrol. I think we now have 6 of them.
Cheers Pete

Thanks for the landy boost mate.lol.lol. don't get that around hear very much, new design engines and oils to suit things stay clean, But put expensive synthetic oil in a 2.8 lux motor( old one) i bet it turns horrible pretty quick, controlling by pass fumes properly has something to do with it to i think.

cheers Axle.

Madfisher !

Seeing that you have 6 of these D4D's can you fill me in on this engine knock that come in after 10,000 k's. One Prado forum has 25 web pages of complaints & it appears to be a world wide problem. Something to do with injectors giving a wrong fuel mixture causing the problem. Toyota won't admit there is a problem, & is only replacing the faulty injectors rather than the lot.

Shane ours are all hire vehicles, one a hiace has 67000ks the rest are low mileage.Can not help you with the knock,can not say I have heard it. If it was my vehicle I would be listening more intently.
The two Prados are so quite inside you would be hardpressed to hear anything.Sorry
Cheers Pete

Nev any good oil should carry away the carbon,but the newer motors burn a higher proportion of the fuel load and are much more efficent.
Cheers Pete

Whats this old timer waffling caper??, :))))).


Axle.

Pete, the 300tdi is direct injection but i'm just giving it credit as its an over 20yr old design.


CheersAxle.

That would account for their excellent fuel economy, only Jap engine to get anywhere near it was the 2.8 rodeo another direct injection motor. The older rodeos where niosy though
Cheers Pete

Agree with the comments re the 300tdi motor, always clean up to the 10k. change interval. (now approaching 200k. without a hitch)
However my 1hz started to go black after 2-3k. even from new. Then I put a 9psi turbo on it and lo and behold, clean oil after 5k., when it is due for change. A good side effect was a 2l/100k. improvement in economy.
Agree about the difference in burn characteristics of direct compared to indirect injection, but in the Toyota my case I am inclined to attribute the cleaner oil from improved combustion levels. I also advanced the injection timing an exact 2deg.
furph

Hughesy the 2.8 and the big lump 3.8 where direct injection so they clean. The disadvantage of direct is they are noisy, the 1hz is indirect
Cheers Pete

I think it's because modern oils have detergents in them to clean as they lube. Also your old inter supercharged diesel was most probably a 2 stroke diesel. They needed the blower to force induction in and force exhaust gasses out on the same stroke (like a miller cycle). They made heaps of grunt but were noisy, dirty bloody things which would need cleaning out regularly because they burned alot of sump oil. It was only crankcase pressure which kept the sump oil from being sucked up and burned even moreso apparently.
An old mate who worked on them said the worst thing you could do to an old 2 stroke diesel was to change the oil. I dont know about that, but i do know 2strike diesels are dirty noisy damned things... i used to sit on the back of them every day at work and suck in their plumes of black smoke....

Well Tippa
Thanks for your reply,yes the old diesel was noise & the further the black smoke pumped out the better the truck run ,Would not last 5min on the road today ,before you got a defect notice.
I had no oil pressure in my old Nissan 1986 MQ after a big tow out of the Simpson, The oil was like Tar ,change the oil & filters it was as good as new. Have a look @ my blog on the Simpson