Oil dipstick colour

No problem let it rip aren't you real hot in the UK I'd probably stay with the Toyota recommended 5w30 for the one NZ engine that you have like mine Why would you reduce the hot side of the oil weight seriously maybe y'all have different technology over there or something been a long time since I've been there with Holden Commodores and all that but I don't think so maybe you should check with the guys and the UK over on Toyota mods I don't think they would give you that kind of advice but what do I know. I'm in a hot climate 90 and 100 during the summer and I am staying with the 5:30 and sometimes I have run the 0-40 European oil from Mobil 1

 

Oil should be changed according to mileage.
But if the mileage is low, then the oil should be changed at least once a year.

 

This is what Honda advises, in their Maintenance Minder system description. Basically, regardless of what schedules and in-dash systems say, if you’re low usage, still change it once a year. Spring would be my pic; oil tends to collect humidity through winter.

if you follow Toyota USA schedule for Gen 2, to the letter (5k miles or 6 months, whichever comes first), then it’d be every 6 months. But with very light use, yeah yearly is sensible.