Just had to buy some engine oil. First off, when I had a petrol car I never had to put oil in the engine. I now have a 3 litre diesel that needs oil every 6 months - it's only 3 years old and I do about 10k a year.
Thing is, I see oil at 15 quid a litre and also at 8 quid what's the difference? Which to buy. Also what does the labelling mean '10w - 40' or '10w - 30'.
It's 2010 and we are still having to put oil in engines?
Next time it's a Toyota not some over rated German brand.

