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Engine Oil
Burnt oil – Oil consumption issues
Ok, by now you have probably realised that THP engines consume a fair amount of oil. The usual oil consumption average is 1 liter per 5000km. Some engines consume less, some engines consume a bit more. This is very usual for direct injection engines and is no reason to worry. A part of oil consumption comes from the piston rings, a larger part comes from the valve oil seals leaking into the intake.
When your engine starts to consume oil, do NOT just top it up. Have the oil completely drained and replaced. Then wait and check your oil consumption again.
Most people just top-up engine oil, when the reason for oil consumption may be the existing oil quality degrading by itself. Bad engine oil quality means shorter life and the oil gets consumed faster.
If your engine starts to consume 1liter/1000km then you will need to check its compression. Then have the valve seals in the cylinder head replaced and everything checked by a specialist.
In terms of oil type, the most usual type is 5W-30, fully synthetic. If you live in a country with warm environmental conditions, you can probably use one grade thicker oil without problems. Colder countries can go down to 0W-30 without issues, as long as it is always fully synthetic grades being used.