[notorious]

Thanks Goran,

I didn't wet filter with oil and there was no warning light.

When you start engine for the first time the oil filter housing (about 1 liter) gets filled with oil first before oil goes to the engine. During these several seconds engine works without oil, so these moments are risky for the engine. Perhaps wetting filter with oil helps to reduce this risky time. This is just my guess.

After this first start I wait several seconds and then switch off engine, assuming oil filter housing is now full with oil and then add extra oil to compensate oil in the filter housing.