The 911 fuel additive and others will make the exhaust smell different.
Aug 26, 2019 / L4600 won't start now. Water in fuel? #11 R Rmart30 Platinum Member Joined Jul 6, 2009 Messages 542 Location Alabama Tractor Currently Kubota L4600HST, two Massey 265's, Massey 230, Kubota M8540...... Had Long 510, Mahindra 3510.Ford 4000, Deere 4230. The 911 fuel additive and others will make the exhaust smell different.