S/V40 PCV diaphragm or kit or entire body
2011 S40 T5 (166,000km) has been squeeling for the last month or so after she warms up a it. Mechanic friend pulled off the oil filler cap, which had a lot of suction, and the squeeling stopped. We think it is the PCV system.
What would you recommend.
1. PCV diaphragm (IPD)
2. PCV diaphragm repair kit (FCP Euro)
3. Oil filter housing. (FCP Euro; IPD)
Would just changing 1. be sufficient, or should I go further.
Trying to do this job myself and save some money.