I bought this old van about 3 years ago on Craigs List for 1600 bucks! My other old old van gave up when it could not pull up the mountains of West Virginia! That one is another long story! Anyway my old van present van began to lose anti-freeze! I could not see any external leaks so could be head gasket blown, intake manifold leak or some other internal problem! So how to fix problem without spending thousands of dollars in repair? I did know by observation that the anti-freeze was not going into my engine oil or transmission oil! That kind of problem is a death warrant to your vehicle! So I added a can of K-Seal head gasket repair! Guess what? It worked! Engine runs fine and no loss of antifreeze! The only way you can tell I have done this repair is to open the radiator cap and look in at the antifreeze! It looks like a chocolate milk shake!