Leroy Wheeler
GBThey take good care of you 🙂 Had some shipping troubles and they took care of it right away 👍🙂
tom klein
GBHonestly it's not made a difference… Honestly it's not made a difference city or highway drivng. I'm on my third full tank starting out at 17.2 highway in my 2021 Yukon Denali. City I dropped to 16.4 which is normal. I made two 300 mile trips to Pa on two full tanks and I remained at 16.4 mpg. So not sure If I'm doing something wrong but it's not working...TK