I am currently 2200 miles into a ST 5W30(WPP made) and I am ready to change it as it's starting to darken a little.
Also there seems to be a little varnish build up where I don't remember seeing any with the M1 5W30 no matter how long the interval.Seems to be more cosmetic more than anything(no consumption)but still this bothers me.I was hoping to stick with dino and get clean internals and be cheap about it but it seems that this engine stays the cleanest with M1 5W30.
With M1 I always used their 5W30 but their other grades seem enticing too.I was thinking about using 1qt of:0W20,5W30,10W30,0W40 to make a cocktail of oil to fill the 4qt sump in my 1ZZ engine which specs 5W30.
I am also thinking of trying just 0W20 now that I am out of the powertrain warranty.
Also there seems to be a little varnish build up where I don't remember seeing any with the M1 5W30 no matter how long the interval.Seems to be more cosmetic more than anything(no consumption)but still this bothers me.I was hoping to stick with dino and get clean internals and be cheap about it but it seems that this engine stays the cleanest with M1 5W30.
With M1 I always used their 5W30 but their other grades seem enticing too.I was thinking about using 1qt of:0W20,5W30,10W30,0W40 to make a cocktail of oil to fill the 4qt sump in my 1ZZ engine which specs 5W30.
I am also thinking of trying just 0W20 now that I am out of the powertrain warranty.