Help, Advice, Owners' Discussion and DIY Tutorials on S40 and V40. In this forum you'll find S40/V40-specific owners asking and answering questions on maintenance, ownership, repairs, tutorials and almost every do-it-yourself thing you can do to save money owning these Volvos.
I replaced the plugs on my 850 with the Bosch Platinum +4. The Volvo plugs which I took off where similar to the +4s but had 3 tips. I'm very satisfied with the Bosch plugs.