Suzuki Club UK

Jordi wrote:10w50 should be fine. Old oil always is thin, the older / warmer the thinner.

Getting battered around inside the engine breaks up the carbon chain molecules that make up the oil, or so I was told back in GCSE Chemistry.

Edweird wrote:

Jordi wrote:10w50 should be fine. Old oil always is thin, the older / warmer the thinner.

Getting battered around inside the engine breaks up the carbon chain molecules that make up the oil, or so I was told back in GCSE Chemistry.

U remember stuff from your gcse I did It last year fail loads but I can't remember a thing !

I've always just used good quality mineral or semi-synthetic 10w40 in f10a engines.

I would avoid using fully synthetic in an old engine that's probably spent most of it's life running on mineral.