> How about this orange stuff that's made for aluminum motors. Is it any >good or does it have phosphates in it. It says it's good for all alum. >blocks. Anybody use this stuff. I use the Prestone extended life orange stuff. I started using it about 8 years ago, when it specifically said phosphate free and did not say dexcool compatible. A few years later, they added the dexcool compatible statement. I emailed them and confirmed that it could be mixed with the older stuff. Since then, they have changed the bottle several times and I haven't checked with them. I recently removed the heads and found NO pitting or signs of corrosion. (after 8 years and 40k miles) I did find orange "mud" in the expansion bottle and a thin orange coating on the inside of the water jacket, so I flushed the system before re-filling. I'm going to keep using the Prestone, but the "mud" bothers me. Cost is under $10 a gallon at the local FLAPS. Bill > |
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