After 217,000+ miles on my 2003 GMC Sierra, I had to have my very first "major" repair. I've been bringing the my pickup to Bobby Likis Auto Service from day 1 after I purchased the truck. I've used Royal Purple synthetic oil from day one as well as being a loyal customer of Pre-Repair. My truck does not burn any oil, has never failed me and I can only attribute that to the routine maintenance being done by Bobbi's crew at the shop. Never - EVER - have I owned a vehicle since 1960 that I've used and abused as I have with this GMC, yet meeting service requirements surely has made a very positive difference in the reliability of my truck.