I've got a 1998 GTI VR6 that I store for summer use and occasionally take to the track. The motor i built for it is still fairly fresh with only about 5000kms on it. I used dino oil for break in and am currently using Amsoil 20W50 but I am not happy with it during the cooler spring and fall. it works great at the track but thats very limited running. I want to replace it with a lighter oil that can withstand some track use preferably in the 5w40 range. What do you guys recommend? I've been contemplating the castrol syntec 5W50 as its readily available but i dont mind paying a little extra for a better quality oil
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