Hi, firstly thanks for the reply. I believe its had 5w-30 as the last service was done by indy garage im unsure, All services before that was all Lexus dealer. Ive now put Castrol Edge 0w-30.
In regards to system messages ive got a TPMS sensor issue also so it always says check system or something along them lines lol. Its currently at 111k miles. The sensor i changed was on the passenger side i believe thats what my mechanic said as i supplied the sensor it was the angled one i think.