Please don't be bored while reading my thread
, as I know there are hundreds of them talking about oil choices, but I just want to be sure I'm making the right choice...
I'm on changing the oil these days, before I leave for the holly days. Have always used Selenia 10w40 semi...but as my new 33 suffers in traffic and needs a little more oil pressure if reaches 90 degree, I was thinking to change to a 10w60 for not loosing performance when the engine gets really hot!
But 10w60 is full synth and I read that this is not really recommended for our boxers as leaks may occur because the agents inside a synthetic oil???
15w50 is semi synth but 15w is a bit thick for cold starts (I think)...
What do you guys recommend to me? I like Selenia but in summer time makes my car suffer in traffic, it's just fine if I cruise or in long trips, but in traffic gets to thin and pressure drops and not pushing the tappets all the way down and so causing valve knocking when accelerating...
Any ideas and what do you guys use.