we had a member, I cant remember if it was here or on ERDT, that put sea foam in his engine and it funked it up pretty bad for a few weeks till he could burn off the tank. If I was going to put any additives in my tank, It would be when the tank was near empty, so if anything went wrong, it wouldnt take me a long to burn it off. If it helps, Fill her up, and go get another bottle of additive. Better safe than sorry. Winding the crap out of the engine every now and then helps too. Alot of the Dodge Intrepids with the 2.7 V6 have died prematurely from oil starvation because sludge builds up in the oil pan and then breaks off and gets sucked into the extrely low oil pickup. It rides less than 3/8 of an inch off the bottom of the pan :roll: . I doubt sludge would build up to such massive levels if granny would put a boot in 'er ass every now and then :wink: