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All oil guru's can you awnser my question?

 
 
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shogunben
Just got MTs


Joined: 21 Jul 2009
Odometer: 253
Location: dorking, surrey



PostPosted: Mon Mar 08, 2010 4:59 pm    Post subject: All oil guru's can you awnser my question? Reply with quote

Can anyone help me??

If your oil is less viscos as in being really thin will it make the engine run a higher oil tempreature?

Also what would be the major concerns or running an engine with too much oil??


Cheers BEN
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Turnip
Just got MTs


Joined: 29 Oct 2007
Odometer: 192
Location: Gloucestershire



PostPosted: Tue Mar 16, 2010 11:07 pm    Post subject: Reply with quote

Hi Ben - you didnt exactly get a flood of replies did you? i saw your post whilst cruising thru and this may - or may not help!
Firstly Im not an oil guru - or any other sort of guru really but i do have some "real life" experience of some of this when working for an industrial diesel manufacturer.
I was tasked with an investigation into the effects of overfilling the sump on said diesels.
In a nutshell - a little overfull = no probs but go too much and the crank starts dipping the oil. The immediate result is the oil temp shoots up, the next things is the pressure drops (as a result of very thin oil) and if you are really unlucky - usually on a worn engine - the thin hot oil works its way up the bores or through the breathers and the engine will run away on its own sump oil. you can switch it off, try and stall it or watch it blow! whatever - you will need a change of pantz afta!
Not sure if you get the pantz bit on a petrol engine, but you will get the first two!
hope that helps?

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Never mistake the edge of your rut for the horizon.........
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shogunben
Just got MTs


Joined: 21 Jul 2009
Odometer: 253
Location: dorking, surrey



PostPosted: Wed Mar 17, 2010 10:00 am    Post subject: Reply with quote

Yes that helps a lot thanks. Confirming what i wanted to hear an overfilled oil level makes the engine oil in the car run hotter and decreasese pressure!

THANKS!
Cheers
BEN
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Ray_Jnr
Banned!


Joined: 06 Mar 2006
Odometer: 4671
Location: The Northeast


1987 Land Rover 90 TD

PostPosted: Mon Mar 22, 2010 7:15 pm    Post subject: Reply with quote

i know on land rover engines if you over fill with too much oil the bottom ends of the pistons whack into the oil and this bursts your front and rear crank seals. Rolling Eyes
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idratherbesurfing
Just got MTs


Joined: 06 Nov 2008
Odometer: 434
Location: In my garage with a cup of tea and the heating on


1985 Land Rover Defender

PostPosted: Mon Mar 22, 2010 10:03 pm    Post subject: Reply with quote

ben.... if yours is 2.5 it needs 15/40 mineral. if its 2.8 then use 10/40 semi!
__________________________________
Ditched the jap crap and bought a 90 Wink ... and then dropped a V8 into it Very Happy
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shogunben
Just got MTs


Joined: 21 Jul 2009
Odometer: 253
Location: dorking, surrey



PostPosted: Tue Mar 23, 2010 8:05 pm    Post subject: Reply with quote

its not for the pajero its for another project i have on the gooo
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Andyman
Gate Opener


Joined: 30 Apr 2010
Odometer: 24




PostPosted: Fri Apr 30, 2010 1:51 am    Post subject: Reply with quote

The thinner the oil the quicker it circulates if the engine is fine, this removes the heat quicker as it circulates quicker. If its to thin and not the right grade bore scuffing happens as the oil film tears and lets the metal come into contact with metal which causes massive heat rises.

Just use the right grade and fill it to its level and no problems.

Dont forget 4X4's have a bigger sump because the oil flows all over when its off road and the pump needs to pick it up all the time.

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