Your Toyota Is On The “Most Wanted” List, The List Of Cars Most Wanted By Oil Sludge, That Is. Synthetic Handles Temperature Extremes Better And Is Less Likely To Form Sludge.
Any car that is known for oil sludge problems would especially benefit from synthetic. It could just save a sludging engine’s life.
Click and have a look at one of many engine people advocating synthetic oil:
http://www.schleeter.com/oil-sludge.htm
CSA