HOT OR COLD WHEN TO CHECK ENGINE OIL LEVEL

Submitted: Sunday, Apr 09, 2006 at 15:32

turbo 79series

HI EVERYBODY HOWS IT GOING .I AM A VERY EXPERIENCED FOUR WHEEL DRIVER BUT HAVE A STUPID QUESTION TO ASK.I AM VERY GOOD FRIENDS WITH A MAJOR 4WD AUSTRALIA WIDE COMPANY AND I HAVE BEEN ADVISED THE BEST TIME TO CHECK THE OIL IN THE ENGINE IS WHEN THE ENGINE IS COLD OR SITTING THERE OVERNIGHT.THAT IS WHAT I DO .I STILL HAVE MY DOUBTS THOUGH.WHEN I RECIEVE MY VEHICLE BACK AFTER A SERVICE I ALWAYS CHECK THE ENGINE OIL LEVEL AFTER SHUTTING DOWN THE MOTOR FOR 5-10 MINUTES AND IT IS NEVER AT THE FULL MARK MAYBE 5MILLS DOWN FROM THE FULL MARK AS THE OIL IS DRAINING DOWN STILL .SO ANY INFORMATION THAT WILL LET ME REST EASIER WOULD BE HELPFUL MY VEHICLE IS A 2002 79SERIES LANDCRUISER TRAYBACK WITH AN AFTERMARKET TURBO DONE BY THIS COMPANY NOT COMPLAINING HAVE USED THEM FOR YEARS JUST INTERESTED IN OTHER OPINIONS
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Reply By: hz75 - Sunday, Apr 09, 2006 at 15:42

Sunday, Apr 09, 2006 at 15:42
i asked myself the same question recenty, as i have driven dozers and tractors in the early part of my life, oil levels were always checked when the engine was running and hot
I tried to check the oil levels in the 4.2 diesel when the engine is running but its an impossiblity (oil all over the dipstick)
AnswerID: 165956

Follow Up By: Member - MURRAY H (VIC) - Sunday, Apr 09, 2006 at 16:09

Sunday, Apr 09, 2006 at 16:09
Gday
The earth moveing dip stick is in a tube down into the sump and is not splattered by oil as the engine spins , your engine dip stick is not enclosed and gets sprayed by oil as the engine spins.
Muzbry
Muzbry
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Follow Up By: Member - MUZBRY VIC) - Sunday, Apr 09, 2006 at 16:39

Sunday, Apr 09, 2006 at 16:39
The idea is to check the oil cold and then to check the oil hot to make sure that a problem has not occured after start up.ie ..water in oil or a major leak that has not been seen by the operator,or driver...depends how good they are ,is what they are called.
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Reply By: hoyks - Sunday, Apr 09, 2006 at 15:52

Sunday, Apr 09, 2006 at 15:52
Hot or cold, just give it 5 minutes to drain to the sump.
Oil does expand a little when hot, but from my experence, there is about a 1 - 2L difference between full and empty on the dip stick, and it don't expand that much.
AnswerID: 165957

Reply By: Barnray - Sunday, Apr 09, 2006 at 15:55

Sunday, Apr 09, 2006 at 15:55
The best time is about 10 minutes after shut down, some dozers have their oil checked while cranking or running. Barnray
AnswerID: 165958

Reply By: peter d - Sunday, Apr 09, 2006 at 16:19

Sunday, Apr 09, 2006 at 16:19
hi all, i operate earthmoving machines and they have a hot and cold mark on the dip stick and theres not that much dif between the two. but i was always told to check all engine oils cold, in the morning before start up is the first thing i do. and i make sure i park on a flat surface each night. but some people do it at night when they shut down.. peter d
AnswerID: 165962

Reply By: Richard Kovac - Sunday, Apr 09, 2006 at 16:31

Sunday, Apr 09, 2006 at 16:31
From the Manual
Checking the engine oil level
With the engine at operating temperature and turned off, check the oil level on the dip stick.
1. To get a true reading, the vehicle should be on a level ground. After turning off the engine, wait a few minutes for the oil to drain back to the bottom of the engine.
2. Pull the dipstick out, hold a rag under the end and wipe it clean.
3. reinsert the dipstick-push it in as far as it will go, or the reading will not be correct.
4. Pull the dipstick out and look at the oil level while holding a rag under the end.

Richard
AnswerID: 165966

Reply By: turbo 79series - Sunday, Apr 09, 2006 at 17:35

Sunday, Apr 09, 2006 at 17:35
THANKS EVERYONE WHO REPLIED .WHAT ABOUT WHEN YOU CHECK OIL COLD AND IT IS ON FULL THEN YOU CHECK OIL AFTER IT HAS REACHED RUNNING TEMPERATURE WAITED SAY 10 MINUTES AND IT IS NOT ON THE FULL MARK SAY 5MILL DOWN FROM IT WOULD YOU ADD OIL SO THE OIL IS FULL ON RUNNING TEMPERATURE AND OVER FULL ON COLD .
AnswerID: 165974

Follow Up By: Leroy - Sunday, Apr 09, 2006 at 21:17

Sunday, Apr 09, 2006 at 21:17
quit the shoutin man.....

Leroy
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Reply By: David from Engine Saver Low Water Alarms - Sunday, Apr 09, 2006 at 18:19

Sunday, Apr 09, 2006 at 18:19
I think you have already answered your own question.

"WHEN I RECIEVE MY VEHICLE BACK AFTER A SERVICE I ALWAYS CHECK THE ENGINE OIL LEVEL AFTER SHUTTING DOWN THE MOTOR FOR 5-10 MINUTES AND IT IS NEVER AT THE FULL MARK MAYBE 5MILLS DOWN FROM THE FULL MARK AS THE OIL IS DRAINING DOWN STILL."

If you are still in any doubt, drain the oil and refill with the quantity recommended by the manufacturer.
Check both hot & cold.
You will have your answer.

Normal passenger vehicles should be checked after the oil has had time to run down to the sump. Otherwise when you check it cold as after an overnight stop it will read high.

Commercial engines, mining equiptment & marine engines are often designed to be checked hot & running, the same as most automatic transmissions.

Not really a "stupid question" though, full marks for asking it.
AnswerID: 165982

Reply By: Member - Bware (Tweed Valley) - Sunday, Apr 09, 2006 at 18:31

Sunday, Apr 09, 2006 at 18:31
Interesting... After I do an oil change and top it up I take it for a run to warm the engine up then shut it down and wait atleast half an hour which you would think is ample time for the oil to drain back into the sump. I then check the dipstick to make sure it is ok. After getting the level to the full mark or just under, I always find that after sitting all night that the level is always above the full mark when checked the next morning. I presume that the extra oil has come from the engine and that perhaps the half hour wait after initial change isn't long enough for all the oil to drain into the sump?
AnswerID: 165987

Reply By: Member - Oldplodder (QLD) - Sunday, Apr 09, 2006 at 19:15

Sunday, Apr 09, 2006 at 19:15
Also depends which car it is and what the manual says.

For the first time, my Pajero says to check the oil hot, 1 to 2 minutes after shut down.
All my previous cars were cold.
So first thing I did was check it warm as instructed, then next day checked it cold so I know the right level, and of course it is a little higher.

So I can check oil levels either way now, hot at the garage, or cold first thing in the morning on a trip, when I check everything else like tyre pressure, brake fuild etc.
AnswerID: 165994

Reply By: Member - Phil G (SA) - Sunday, Apr 09, 2006 at 21:03

Sunday, Apr 09, 2006 at 21:03
I don't think it matters. Checking it when hot after its had 5 minutes to settle usually gives a reading thats no more than a few mm lower on the dipstick.

Your sump capacity is 10.5 litres and the difference between the two dipstick marks is a bit more than a litre. So practically, it doesn't make a significant difference.

But, if you want to monitor oil consumption, then checking it cold after settling overnight, in the same level spot on the driveway is the way I like to do it.
2012 Landcruiser 200
AnswerID: 166041

Reply By: Bob Y. - Qld - Sunday, Apr 09, 2006 at 21:08

Sunday, Apr 09, 2006 at 21:08
Many older Toyota drivers will remember the early HJ45's had a problem when you checked the oil first thing in the morning. The dipstick came out clean, or at a greatly reduced level. Needed to be put in again, to accurately check the level.

Knew a bloke who did the one check, then promptly whacked another 2 litres in, "because it was down".

Hooroo...
Seen it all, Done it all.
Can't remember most of it.

AnswerID: 166042

Reply By: Member - Phil G (SA) - Sunday, Apr 09, 2006 at 23:02

Sunday, Apr 09, 2006 at 23:02
Just a suggestion - its considered rude on the internet to use capitals all the time - its like shouting. I'm guessing you hadn't realised this.

Cheers
Phil
2012 Landcruiser 200
AnswerID: 166075

Reply By: turbo 79series - Monday, Apr 10, 2006 at 16:20

Monday, Apr 10, 2006 at 16:20
Hi everyone i am sorry if you thought i was being rude using capital letters had no idea .
AnswerID: 166190

Follow Up By: Wombat - Monday, Apr 10, 2006 at 17:09

Monday, Apr 10, 2006 at 17:09
No need for the apology Turbo, but I'm wondering if I was the only "shouting" your words in my head as I read them?
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