This is the second time I buy this diff fluid. It wasn't that long ago maybe 2 years and twenty plus thousand miles to be more precise. The reason why I'm buying it this time is not for service but for a helical lsd swap I'm doing on my open diff. I should of bought the motul to try out, but I want to use this first and maybe 40,000 miles down the road even tho my car diff won't need the service I just want to compare if it makes any difference with motul maybe it works cooler.