on a recent disscusion about motor oils, I noticed that some people metioned some sludge problems with late model toyota cars. I just wanted to share info. which I found with similar owners of the Sienna.http://www.carsurvey.org/model_Toyota_Sienna.html. Has anybody had any other problems/experiences with other toyota products. thanks for your feed back. 88fj62 and 95corolla.