long story short, after some repairs I needed new diff fluid. I was in the middle of no where and they had no full synthetic 75w90. The best I could find was synthetic-blend 75w90 so I threw it in. So far so good. I got home with no issues, no noises or anything weird happening.
Now that I am home I have purchased some Royal Purple synthetic 75w90. I plan to drain the diff again tonight and refill with the Royal Purple. I will get as much of the synthetic blend out as I can obviously some will stay. Is it ok to mix the synthetic and the synthetic blend?
btw 2003 Tahoe, Z71 with the G80.
Now that I am home I have purchased some Royal Purple synthetic 75w90. I plan to drain the diff again tonight and refill with the Royal Purple. I will get as much of the synthetic blend out as I can obviously some will stay. Is it ok to mix the synthetic and the synthetic blend?
btw 2003 Tahoe, Z71 with the G80.