Can a stock 4AGE series 3 16 Valve engine use unleaded petrol with zero chance of valve seat recession?
According to this site
http://www.acea.be/publications/article ... -standards
and this pdf file on that site
http://www.acea.be/uploads/publications ... BILITY.pdf
It is not compatible without a valve lubricant.
This one however says it's fine.
Even the local wheels24 site says my car is fine as it is a 1990 model.
http://www.wheels24.co.za/News/Leaded-p ... e-20040702
This site however again says only compatible with valve seat additive
Can anybody give me a definitive answer please? I just filled with unleaded for the first time as I can no longer find LRP. Car seems to be running just fine. Have done +-60km so far with no difference at all.
2007 Ford Focus ST