Hi Guys, I'm new here but guessed it's the best place for some advice. I have a 2008 Volvo S40 D5 2.4d which has done just over 100k - the D5 engines are known to be strong but noisy.
Since changing the filter and oil to Mobil 1 5w30 I have noticed a knock from cold and generally a louder engine. Weeks after changing the oil I found out the Mobil recommendation is wrong and the correct oil spec is 0w30 for the UK. Would this cause the issues I've seen here?
I've also read that different brands of oil can give varying results with engine knocks. Can anyone recommend the best oil to use and are all oil additives worth considering?
Since changing the filter and oil to Mobil 1 5w30 I have noticed a knock from cold and generally a louder engine. Weeks after changing the oil I found out the Mobil recommendation is wrong and the correct oil spec is 0w30 for the UK. Would this cause the issues I've seen here?
I've also read that different brands of oil can give varying results with engine knocks. Can anyone recommend the best oil to use and are all oil additives worth considering?
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