RangeRovers.net Forum banner

1 - 10 of 10 Posts

·
Registered
Joined
·
7 Posts
Discussion Starter #1
Burns 2 liters over 4000 miles currently using 5w-30 semi blend... what is a thicker one that will work for her?
 

·
Registered
2006-2009 Range Rover Sport
Joined
·
17 Posts
Burns 2 liters over 4000 miles currently using 5w-30 semi blend... what is a thicker one that will work for her?
10w-30 or 10w-40 are both thicker, but I wouldn't recommend switching to that simply because it's thicker.

Do you know for sure the engine is consuming the oil and not leaking? If it is in fact consuming the oil, it isn't because the oil is too thin; there's something else going on.

Having stated that, some consumption should be expected, but not to an excess.
 

·
Registered
2013-2015 Range Rover Sport
Joined
·
480 Posts
synthetic 10w40 should help: but it sounds like you have bad rings. Are you seeing grey/bluish smoke on acceleration or on deceleration (valve guides)?
 

·
Registered
2006-2009 Range Rover Sport
Joined
·
860 Posts
What about a quart of Lucas. It is really thick. Maybe something wrong with your PCV valve.
 

·
Registered
2013-2015 Range Rover Sport
Joined
·
159 Posts
So normal use in spec is 1 quart for every 1000 miles (at least thats what Land Rover spec was while I was there). Yes it is burning the oil but thats what engines do, especially once they get a bit worn. One thing easy to check(not common on 4.4 and 4.2) is to make sure the pcv is not blown out(lean short term fuel trim and high idle) anything else will be consumed through rings or valve guides and if it is not smoking just keep driving it. You may want to check the plugs just to see if it is isolated to one cylinder. As for thicker oil unless it is supercharged go to 10w40 NON synthetic. (synthetic oils will be consumed easier in an engine) Also no harm in running Lucas oil treatment align with the oil change. Change your oil more frequently as older oil(over 4-5000miles) will burn faster too. This recommendation is for 2006-2009 4.4 engines. 5.0 is a totally different animal.



As for leaking oil comment. For everyone, Imagine how much oil you cook with (tablespoons usually) now imagine pouring 1 quart or litre of oil on the ground. It would be a pool the size of a car. Unless there is a large puddle of oil under a car it is not leaking a quart in 1000 miles let alone 2 litres in 4000.
 

·
Registered
Joined
·
174 Posts
There is a possibility that the seals are leaking while the engine is running, or at speed. This will not show up unless you visually check everything under the vehicle. First, check the PCV. If it is not working correctly, excessive crankcase pressure can cause leaks while underway. This will likely not show up unless the oil pressure is elevated, such as over 2000rpm. If the issue is appearing due to oil pressure issues, it is possible that the thicker oil may aggravate the issue due to higher pressures. Something else to consider here is that, if the valve seals or rings are the problem, the oil in the exhaust could easily be burned off by the catalytic convertor.
 
1 - 10 of 10 Posts
Top