80 series LC Oil pressure at idle?

Submitted: Tuesday, Apr 25, 2006 at 13:55
ThreadID: 33226 Views:7982 Replies:9 FollowUps:1
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I am considering purchasing a 1996 GXL, 80 series Landcruiser with 161,000 Kms and ABS for towing.
Starting from cold, the idle oil pressure is at two thirds scale.
At full operating temperature the idle oil pressure is only about one pointer width above the start graduation.
The vehicle owner's manual indicates this is acceptable.
Would experienced owners consider this about normal for the Kms traveled?
Could somebody provide the actual minimum acceptable specification pressure?
Is it time to replace engine bearings for towing?
This model does not have an oxygen sensor.
Do these models use more fuel than those with the Oxygen sensor?
Is there a higher inherant risk converting this LC to LPG?

Any comments greatly appreciated.
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Reply By: fisho64 - Tuesday, Apr 25, 2006 at 14:30

Tuesday, Apr 25, 2006 at 14:30
I assume this is a petrol one? Engines require very little oil pressure at idle.
AnswerID: 168894

Reply By: Exploder - Tuesday, Apr 25, 2006 at 14:35

Tuesday, Apr 25, 2006 at 14:35
Those factories Oil gaugers are very hit and miss and there is no scale on them ether as long as it’s out of the red at idle and isn’t sitting too low when driving it should be ok. 160,000 isn’t that much on a well maintained 6cyl engine
AnswerID: 168896

Follow Up By: Nido - Tuesday, Apr 25, 2006 at 16:48

Tuesday, Apr 25, 2006 at 16:48
Thank you Explorer for your quick response.

My concern originated from the unknown service history after 80,000 Kms.

There is no red line on the gauge however pressure is maintained when in motion.
FollowupID: 424286

Reply By: Member No 1- Tuesday, Apr 25, 2006 at 15:41

Tuesday, Apr 25, 2006 at 15:41
as exploder says above...the factory fitted indicators are excatly that...an indicator...they were never designed to tell oil pressure....just somewhere above zero is acceptable
AnswerID: 168905

Reply By: Laura B - Tuesday, Apr 25, 2006 at 16:16

Tuesday, Apr 25, 2006 at 16:16
ours has done (dual fuel) and as far as i can remember from not really noticing!!LOL!!......its around the 2/3 mark and doesnt move from there.....we have done 253,000km.....ours is an 80 1994....

Laura B
AnswerID: 168912

Reply By: Simon C - Tuesday, Apr 25, 2006 at 21:52

Tuesday, Apr 25, 2006 at 21:52
I would suggest not trusting the factory gauge at all. Mine has done 325000 km, and at idle Cold and warm, it sits at the half way mark, at 1200+ Rpm, it sits just above the 3/4 mark. MAte had same model/year, with a lot less km's, and his was sitting just above low mark and only got above 1/2 way at 1500 rpm. Put an oli pressure guage on both, and oil pressure was identical. Stick a mechanical guage in it for piece of mind...even just to test it.
AnswerID: 168979

Reply By: Member - Nick (Kununurra) - Tuesday, Apr 25, 2006 at 22:14

Tuesday, Apr 25, 2006 at 22:14
Our 100 series sits on 1/4 at idle and just above half at 3000rpm when hot.I put a gauge on it yesterday and its 25psi at idle and 80 psi at 3000rpm when hot.(these are well within spec for a 1HZ)Toyota up here reacon there's no known problem with the senders/gauges and if I book it in they'll have a look at it(in other words charge like a woonded bull to do nothing)but not a warranty issue.
AnswerID: 168985

Reply By: Member - Phil G (SA) - Tuesday, Apr 25, 2006 at 22:29

Tuesday, Apr 25, 2006 at 22:29
Like others said, take no notice of the gauge - common problem for this gauge to read low on LandCruisers. Its usually the sender unit losing its calibration.
AnswerID: 168988

Reply By: Hairy - Tuesday, Apr 25, 2006 at 23:23

Tuesday, Apr 25, 2006 at 23:23
Yeh all of the above!
Mine actually reads high.
But on my HJ60 it reads low on idle but over the top on high revs, and thats on an after market analouge gauge, but then again whos going to argue after half a million k's.
Id get a mechanic to check it for ya!
AnswerID: 168993

Reply By: Member - DOZER- Wednesday, Apr 26, 2006 at 09:46

Wednesday, Apr 26, 2006 at 09:46
I own a petrol 94, and this is normal...these motors dont have oil pressure problems, the worst thing that happens is a little hose off the head, passenger rear, springs a leak and the motor cooks.
No o2 sensor is good for LPG...these motors make more power, use thesame amount of ffuel, are a little dirtier on the enviroment over the earlier tho.
If you go near LPG, make sure the valve clearances are done every 40k, and the motor will last for a long time.
b4 you bag me out, walk a mile in my shoes, then your a mile away and have my shoes :)

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AnswerID: 169032

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