First post ever, here goes nothin.... Sent the wife to pickup oil and filter while at wally world. I wanted pennzoil high mileage 5w30, she brought home a 5 quart jug of pennzoil ultra. and would you know it she lost the reciept . It's been 5k since i changed the oil in the "baron". Still full, but its pretty dirty, which scares me because the extended guard filters are suppose to hold 2x the amount of dirt. This will only be the second oil change since i bought the car.should i go ahead and us the ultra since i have it and let it flush it out good , or save it for the highlander and get a different hm oil? It didnt leak when i bought it, but it started smoking( white) a bit at startup and if i did alot of stop and go traffic. Im just worried this stuff will shrink the seals or knock something loose. could i add some engine honey or bars leak as a precaution?