I've been using Opti 4 since I purchased my Fastrack 5 years ago b/c in 'doubled the engine warranty'. However, at 15/bottle, is it really worth it? I can buy Kaw 10/30 for $5.50/qt or Mobil 1 for $7.5/qt.
Is Opti really worth twice the price? If not, do I go with a full synthetic or synthetic blend?
Bill
Is Opti really worth twice the price? If not, do I go with a full synthetic or synthetic blend?
Bill