i'm just running mine in and it's got asda's finest £5 a gallon in it and swapped oil after 500 and am about to again at 1000 then at 1500 swap to the oil it will run on till it dies as that has proved us well in past and so far it's had a bar of boost through it till 6300 and once new oil and actuator are in it'll be upped till we see what it can take or when the standard cam runs out of legs