Originally Posted by BigShug681
My mother has a 2008 Grand Caravan with the 4.0 and while we've always been good about changing the oil and with good oils, Valvoline SYNPower, Pennzoil Platinum/Ultra Platinum and Mobil1, it still seems to burn oil. I do hotshot haul work and also work as an independent AMSOIL Dealer, so after having good results with running amsoil in my truck I started switching all my vehicles over, at which point I decided to become an independent dealer, including her van. First we ran XL 10w30 and it seemed to have burned 2 quarts during the span off 12k miles, which was a little less than before at about 1-1.5qts at 5k miles. The current fill is 10w30 Sig Series and it seems to be holding at the current usage rate, maybe a half quart less, but she hasn't put enough miles on it yet for me to say for certain. That being said i do believe other oils could have maybe slowed the consumption rate but amsoil has really worked for me and my family. I've also ran a tank of the P.I Improver and we did the Engine flush before we swapped to the signature series so any 3 of those could account to the decrease in consumption or none of them. Just my personal experience so take it with a grain of salt.
My Santa Fe run on Amsoil the majority of its life burned no oil measurable on the dipstick at 300K miles (535,000km) which is impressive for any vehicle let alone one of the earlier Korean engines and the 2.7L was not easy on oil whatsoever. Whatever is in their formula works well for burn-off.
That said my dad's PentaStar running on dino oil its whole life doesn't consume any oil either and it has over 300K KM (180K miles) on it currently, so some engine designs are just really good whereas others rely more heavily on the lubricant to resist consumption.