Question about 1997 Lexus LX 450

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Emgine oil shortage

I seem to be adding about a liter of engine oil every 2 weeks without noticing any visible leakages in and around the engine. Please advise.

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There are 2 reasons for this first you have a vehicle with i'm sure at least 100,000 miles on it this means that the valve seals are most likely hard and not soft like the should be,and therefore the oil seeps down into the piston cylinders and get's burned. Second you have an oil ring on the piston and if this is worn oil will be brought up through pistion from oil pan and burned as well. now most oil leaks occur either around the valve covers or the oil pan, however there are seals on the crankshaft as well and they tend to leak over time. unless there is a puddle under the vehicle while it's parked I would say that either the valve seals are the problem or piston oil ring is the problem or both. the only way to solve it is to have engine overhauled, this of course is not cheap.

Posted on Nov 07, 2008

  • nenchin josiah May 22, 2013

    ok, you have made a lot of sense sir. the car in question is a 1997 Mitsubishi carisma GDI 1.8ltr. it also makes ping sounds when about to commence movement or when the AC is turned on. what do i do?

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Engine oil consumption one liter per 3000 KM.


It depends on why/where the oil is going. The following discussion presumes there are no visible leaks, Be sure and check the drain hole on the bell housing for oil leakage.

If you are using a low viscosity non-synthetic oil, and are in a hot climate, and you routinely drive at freeway speeds, up to 15% of the oil will evaporate!!
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