Which engine oil to 307 lpg - 307 sounds

Friends searched in the forum, I could not find the answer to this question. Which engine oil would you recommend for the 307 lpg vehicle, and should we add a boron additive? When I go with my car, I already get the road sound inside (Tires new Yokohoma C Drive 2, rot-balance okay) and also when I get on the throttle, there is a strange engine sound (when the rot-balancer vehicle drives for control, it sounds like the filter performance filter is asked me but I used a normal filter). I am waiting for your help on these issues.

When the vehicle is LPG, it does not show any change. You can use the same whatever oil you are using. However, the generally used semi-synthetic is that you use 5-40 instead of 10-40, which is full synthetic ... Its brand is not very important. Total Quartz 9000 5-40, & nbsp; Mobile Super 3000 X1 5-40 etc. You can prefer all brands & nbsp;

Tire dates new cecoli.

Do you check the door wicks, it gets old even though it gets sound inside, when it comes to the sound coming from the engine, there are felts under the windshield between the engine and the front console, they prevent them from passing sound, do you have them? is it sound

There are many places such as intermittent, very old in felt. I said to the service, let's change it, they said it is difficult.