Hey Guys,

I have a 2008 XC90 3.2L AWD with 75,000kms

Cars run fine and fuel consumption per kms is OK.

What kms this engine need to replace the spark plugs as maintenance?

I am going to order the Oil, Air & Fuel filter for my next maitenance and I dont know if I need to order the spark plugs too.

What factory type of plugs do this engine use? Regular, Platinum or Iridium?

I was doing a search for DENSO and found all these plugs work for my engine, but I am not sure which one to order. I am not trying to buy the cheapest ones, but something that will give the same or better perfomance as the volvo ones

1. STD - Long # K20HR-U11|O.E. Recommended Resistor Plug with Patented U-Groove Design
2. Iridium Long-Life - Long # SK20HR11 Iridium Long Life - Patented Iridium Alloy Plug (90% Ir) with Platinum Ground Strap
3. Platinum TT - Long # PKH20TT Platinum TT Plug - Twin-Tip Technology Platinum Center Electrode & Titanium Enhanced Ground Strap
4. Iridium TT -Long # IKH20TT Iridium TT - Ultimate Endurance and Power, 0.4mm Iridium and 0.7mm Platinum Twin-Tip Technology
5. Iridium Power - Long # IKH20 Iridium Power - Performance Upgrade World's Smallest Center Electrode (0.4 mm Dia.) & Tapered Tip Patented U-Groove Design & Patented Ir Alloy (90% Ir)

THX

Isaac