I've run Everstarts in my DDs (not Jeeps) for about 15 yrs. They have consistently given me at least the performance they warranty, in fact, I've never replaced one before the car was sold or traded. They have a two-year full replacement guarantee (one of the first to offer it) and there are Walmarts everywhere. I'd guess I've bought at least ten of these for my cars/trucks and those of my daughters. I run Optimas in my Jeeps, however -- my yellow-top lasted me 15 yrs and is still starting that CJ-5 for the new owners.