well ive got a bunch of mods, stage 3, no engine work tho. also stock turbo waiting for it to die and then borg efr here i come. recently dynoed at 347 flywheel and 298 at wheels. i've been using royal purp. 5w30 but i do notice about half a qt. of loss every 500 mi. or so. which is the lowest of the many i've tried so far. i just never went outside of the 5w30 number. again any one have any words about eneos??