Patman
Staff member
I sent an email to ExxonMobil to find out the Noack value for their new formula of Mobil 1 ESP 5w30 and they responded back that it's 7.9%. The old version, called ESP Formula 5w30 supposedly had a Noack of 5.6% but that was through independent testing so it's unclear whether or not that number could be trusted.
When my supply of ESP Formula 5w30 runs out (I have enough for the next 5 oil changes in the Corvette) I think I will start using this new 5w30 ESP (Canadian Tire is now starting to stock it in 1 quart bottles at $16.29 each)
When my supply of ESP Formula 5w30 runs out (I have enough for the next 5 oil changes in the Corvette) I think I will start using this new 5w30 ESP (Canadian Tire is now starting to stock it in 1 quart bottles at $16.29 each)