Ok so I took my MH to the local GM store to have another shift actuator seal installed. I was going to do it myself but I needed 2 or 3 special tools to do it. I also had them change to Dextron VI. Anyway when I got back to my RV park I checked the fluid while it was hot, level and in park. It showed barely on the tip way below full cold mark. So I check my invoice and it says I payed for 8 quarts to refill, I had them leave the filter alone since it was just changed. Now after checking this forum it appears It should take 12 or 13 quarts? Don't they have a book to tell them?
Any chance being 4 or 5 quarts low for 15 miles could cause a problem?