Hi guys, need help with what oil i should use on my s2 turbo. Engine has had a full rebuild using forged internals, had running including a set up on base map and had around 5 miles use driving until the oil seal went on the turbo. Was using millers running in oil at this point. Now ive had the turbo rebuilt, i need to change oil for fresh, so what grade oil do i get? Should i get more running in oil and use that for 500 or so miles ? Or just get a 10w 40 grade ?
cheers