4.6 using alot of oil

skirabb · Jun 11, 2009

Hi folks!
I've got a 2001 p38 and the 4.6 v8 is using nearly as much oil as fuel!

Strange thing is, there doesn't seem to be any clues as to where the oil is going. No smoke (ever!) and no significant leaks (according to land rover themselves and the driveway).

There's about 75k on the clock and it seems to be using around 1 liter every 300-400 miles ish? I razz it a bit but generally its treated very gently.

Surely this isn't normal! has any one got any ideas where all my oil is going?

cheers

POAH · Jun 11, 2009

what sae oil are you using 10w40? if you are try using 15w40.

skirabb · Jun 11, 2009

would that really make that much difference?

does anyone have a similar aged enginge? how much does yours use?

gavbriggs · Jun 12, 2009

it has to be going somewhere and there are only a few ways it can go!! coolant, floor and through exhaust!!

could it be a seal thats gone and its only leaking under heavy load?

Cabbie · Jun 12, 2009

It must be burning it. Perhaps you can't see smoke 'cos it's only doing it when you are giving it some welly and it is just getting blown away.

skirabb · Jun 12, 2009

hmmm, i'll try and get someone to follow me and watch as i floor it. maybe not me dad in his honda jazz (don't worry he's got a landy aswell)! ha!

if its goin in the coolant what should i look for?

cheers

hammy2909 · Jun 12, 2009

Coolant will look nasty. Mayonnaise under the oil cap. Usually mean head gaskets gone though.

skirabb · Jun 14, 2009

the coolant and oil both look normal...

hammy2909 · Jun 14, 2009

You could be burning it then. Check your spark plugs for signs of excess oil burning (number 3 on pic below)

Failing that, it could be seals or piston rings failing.

BOOMER · Jun 27, 2009

Mate of mine ended up putting new piston rings in his 4.6 because he had heavy oil consumption like yours and it failed the emissions on the MOT

matchmetisse · Jul 5, 2009

check your valve stem oil seals,how do I know.....exactly same problem!

classic kev · Jul 5, 2009

Do a complete wet and dry compression test, this should give you an indication if you need new rings/head gasket or if your problem is in the top end. Would think this is the most sensible place to start.

frags · Aug 29, 2009

I had the same problem, i am now having to do a rebuild after is siezed. the head gasket had gone, around number 4 pot, blowing into the con rods, oils was burnt and caked around rods.

hope this helps

Harry

guinness · Sep 20, 2009

hi did you solve the problem oil use, i am having the same problem and cannot track it down.

thanks

skirabb · Jan 7, 2010

guinness said:
hi did you solve the problem oil use, i am having the same problem and cannot track it down.

thanks

no sorry, i just got a new engine coz when we took the heads off it had slipped a liner.

4.6 using alot of oil

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