Engine oil staying clean !.( In Appearance)
Submitted: Wednesday, Aug 20, 2008 at 20:45
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Member - Axle
Out of all the diesel motors i've been around over the years and between tractors, trucks ,utes, earthmoving & excavator gear, i have never seen engine oil stay as clean between changes as my 300 tdi landrover motor , and thats been a very noticeable fact.
I have had Isuzu motors in excavators for years, Brilliant engines, but the oil goes black 1/2hr after you change it, Mits diesels were another one, Dosen't mean their no good, they all do the work, its just a more comfy look to have nice clean looking oil on ya stick!!. " YOU know what i mean"!
Cheers Axle.
Reply By: TD100 - Wednesday, Aug 20, 2008 at 20:52
Wednesday, Aug 20, 2008 at 20:52
hey axle,
kno what ya mean,pull the cruisers oil out after 5k and its still relatively clean,same as the adventra after 7.5k, good running engines and quality oils do help this also.the old 60 series 2H hahahaha it was putrid after running it for 2 mins then check levels and it looked no different to what was just pulled out!! old bangers are just like that-technology i say. cheers Paul
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321447
Follow Up By: Member - Axle - Wednesday, Aug 20, 2008 at 22:13
Wednesday, Aug 20, 2008 at 22:13
Technology or something like that....lol
Cheers Axle.
FollowupID:
588344
Reply By: Tippa - Wednesday, Aug 20, 2008 at 20:57
Wednesday, Aug 20, 2008 at 20:57
Fresh oil goes black quickly either from picking up carbon deposits in your oil galleries or from heat degrading it usually over a fairly long period of time/kms.
Your landrover must have a nice internally clean engine because it wouldnt put out enough power to produce heat... ;)
Just kidding!
AnswerID:
321449
Follow Up By: Stephen M (NSW) - Wednesday, Aug 20, 2008 at 21:01
Wednesday, Aug 20, 2008 at 21:01
Hey Tippa ever driven a 2.8D non turbo hilux. The landy would kill it LOL. Regards Steve M
FollowupID:
588310
Follow Up By: Tippa - Thursday, Aug 21, 2008 at 09:34
Thursday, Aug 21, 2008 at 09:34
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.
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588377
Reply By: Stephen M (NSW) - Wednesday, Aug 20, 2008 at 20:59
Wednesday, Aug 20, 2008 at 20:59
Hi Axle, yeah I use to change the oil on the old lux every 3 1/2 to 4k and found after about 1/2 of running on new oil it was black again that was including new filter every time as
well. I use to use valvoline super diesel oil. Havnt seen it for myself but I believe most of the new diesel motors eg like the D4D hilux/prado motors stay very clean up to and over the 10k mark. Must admit I dont miss changing the oil like I use to. Prado (petrol) gets done every 10 and still has that golden look about it. I use magnatec in the prado.Regards Steve M
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Follow Up By: Member - Madfisher - Wednesday, Aug 20, 2008 at 21:11
Wednesday, Aug 20, 2008 at 21:11
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
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Follow Up By: Member - Axle - Wednesday, Aug 20, 2008 at 21:14
Wednesday, Aug 20, 2008 at 21:14
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.
FollowupID:
588314
Follow Up By: Shane (QLD) - Thursday, Aug 21, 2008 at 07:36
Thursday, Aug 21, 2008 at 07:36
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.
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Follow Up By: Member - Madfisher - Thursday, Aug 21, 2008 at 13:40
Thursday, Aug 21, 2008 at 13:40
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
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588396
Reply By: Member - Nev (TAS) - Wednesday, Aug 20, 2008 at 21:08
Wednesday, Aug 20, 2008 at 21:08
Hi all,
Could it be that some of the older motors used oil that had some sort of detergent in it whereas maybe the newer synthetic stuff doesn't. Was listening to an old-timer waffling on last weekend about diesel oils and I am sure he waxed lyrical along these lines.
Rgds
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Follow Up By: Member - Madfisher - Wednesday, Aug 20, 2008 at 21:18
Wednesday, Aug 20, 2008 at 21:18
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
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Follow Up By: Member - Axle - Wednesday, Aug 20, 2008 at 21:19
Wednesday, Aug 20, 2008 at 21:19
Whats this old timer waffling caper??, :))))).
Axle.
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Reply By: Member - Madfisher - Wednesday, Aug 20, 2008 at 21:15
Wednesday, Aug 20, 2008 at 21:15
Indirect injection diesels are notorious for sooting up. Steves old lux would be a good eg.Direct injection diesels have always run a lot cleaner, the old 3.8 4 cylinder isuzu motors could go 10000ks years ago between oil changes.
My bet is the 300tdi is direct injection.
Cheers Pete
AnswerID:
321456
Follow Up By: Member - Axle - Wednesday, Aug 20, 2008 at 21:25
Wednesday, Aug 20, 2008 at 21:25
Pete, the 300tdi is direct injection but i'm just giving it credit as its an over 20yr old design.
CheersAxle.
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Follow Up By: Member - Madfisher - Wednesday, Aug 20, 2008 at 21:57
Wednesday, Aug 20, 2008 at 21:57
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
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588338
Follow Up By: furph - Thursday, Aug 21, 2008 at 08:21
Thursday, Aug 21, 2008 at 08:21
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
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Reply By: Member - Davoe (Yalgoo) - Wednesday, Aug 20, 2008 at 23:24
Wednesday, Aug 20, 2008 at 23:24
Ive seen this on a 1hz (once) a wok vehicle you had to look hard at the dipstick to determine oil level. Oil was cleaner than a gas motor
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Reply By: Tippa - Thursday, Aug 21, 2008 at 09:30
Thursday, Aug 21, 2008 at 09:30
A friend bought a second hand commodore a while back.Kept raving about how it never used oil and the oil was always perfectly clean, like honey. I couldnt understand it because it was a heap, and blew lots of blue smoke. He raved about it for about a month until it seized....
The oil on the dipstick was still full and looked new..... what the dodgey used car dealer had done was push a piece of cork down the dipstick tube and put a bit of fresh oil in it, and then shorten the dipstick so it read full...
AnswerID:
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Reply By: Member - Hughesy (NSW) - Thursday, Aug 21, 2008 at 13:23
Thursday, Aug 21, 2008 at 13:23
Funny you say Isuzu motors are the worst. Out of all the vehicles I owned, a 2.8TD Rodeo with 250k on the clock was the best - you could still see the dipstick thru the oil at 5000km. Look in thru the oil fill cap and everything thing inside was all shining metal....can't say the same about all the 1HZ's I've owned.
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Follow Up By: Member - Madfisher - Thursday, Aug 21, 2008 at 13:44
Thursday, Aug 21, 2008 at 13:44
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
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Reply By: CLC50 (QLD ) - Thursday, Aug 21, 2008 at 16:48
Thursday, Aug 21, 2008 at 16:48
Well back in the late 50's early 60's I had 2 x 180 Inter Trucks & a 190 Inter with a Cummings Motor with a super charger fitted on, all diesels .
We use to flush the engines every 10.000
miles when we changed the oil, I cannot remember the mixture but the oil at changes was always good . I often wonder why we still don't do this today .
I thing the mix was 20 oil & kero does anyone remember the right mix.
AnswerID:
321541
Follow Up By: Tippa - Thursday, Aug 21, 2008 at 21:12
Thursday, Aug 21, 2008 at 21:12
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....
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Follow Up By: CLC50 (QLD ) - Friday, Aug 22, 2008 at 06:46
Friday, Aug 22, 2008 at 06:46
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
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