I went with 5W 50 Castrol Edge Full Synthetic since the oil filler cap says: SAE 5W 50. After checking Ford WSS-M2C937-A, it requires special engine oil for Ford Focus RS. Viscosity should be SAE 0W-40. (A3/B3) Castrol Edge in this weight meets Ford's requirement. Then the FoRS supplement under Specifications says: 501 posts · Joined 2015. #4 · Aug 9, 2016. Boost can be dependent on temp and altitude. The ECU will adjust accordingly. I live at a very high altitude and the car will actually peak at 25psi. 2016 Ford Focus RS. Took Delivery July 2016 taken for a joyride by a dealership employee June 2017. Head gasket Failed Sept 2017.
Thelastosirus. Its in the manual that if you don't have 2 admin keys, the dealer has to reprogram the car. That will cost you just as much as buying a 3rd key upfront, in case you ever lose one. I kept my 3rd key from my 2016 FST and use it as a backup on my RS. It cost $136 for the fob + pre-cut emergency key.

The stock wheels at 19x8 ET50 IIRC and you can go with at least 10-15mm less offset on an 8" wide wheel and still keep the tires inside the fender (so you don't have to worry about rubbing). I don't know what width the OZs you are looking at are. Here is an easy offset comparison calculator.

Ford Focus RS mk1. - [2.1. 2024] Nabízím na prodej vozidlo ford focus rs 2.0 Turbo první generace, rok výroby 2004 s nájezdem 147 000 km. - Celoročně garážované - Auto je v sériovém stavu Investiční auto vyrobeno pouze 4501 ks z toho levostranných cca 2000ks Autu stále stoupa ho 499 999 Kč.
Ford Focus. Focus ST MK4; Focus ST MK4 [FaceLift] Focus ST225 MK2; Focus ST250 MK3; Focus RS MK1; Focus RS MK2; Focus RS MK3; Ford Puma. Ford Mustang. Mustang S550 2.3L; Mustang S550 V8; Mustang S550 V8 Face-Lift; Ford Servicing. BMW Performance. BMW G-Series M Models. G80 M3 (2021+) G81 M3 Touring (2023+) G82 M4 (2021+) G87 M2 (2023+) BMW F . 122 365 324 323 353 286 19 394 102

ford focus rs mk1 specs