Originally Posted by
Niles
again, as before, the 280 is aimed at an 850 t5 that is a little 'worn' or 'tired', the 280 full bhp depends on the condition of the engine & other related parts. an 850 with 225k miles should have a 280, my car was at 130k, they said my car can handle the 304, after fitting the tech guys said my car was fast as hell (3 other cars tuned on the same day). My car has a full Volvo history etc etc.....
As for octane.....put regular fuel in mine & it'll pink & misfire like a bit#h!!!! My car is very happy on tesco 99 or Vpower (98 octane). I drove to Hungary a while back & Vpower on the contint is 100 octane!! Car went like the clappers!!!!
So, tired car, your risk..... 304. 280 more appropriate. Tight car good history 304!!
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