Originally Posted By: dslofti
Between these 2 oils which is better? Any long milege stories with these?
Whichever you can get most easily and most cheaply will be better. They're both fantastic oils. I've used both quite a bit, with a lot of GTX many years back. My old LTD from years ago was totalled with 500,000 km on it. About half of that usage was with GTX, the first half with QS.
Up here at least, GTX is always a good choice because of pricing.