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[quote=Anonymous]Water doesn't "get into the engine"   Do you even understand how engines work?

The exhaust is largely water, because water is produced when liquid hydrocarbon fuels are burned. . When that water produced by that combustion condenses inside the exhaust system (because parts of it are still cold enough because it hasn't reached a "hot" temperature all the way to the tailpipe) it accumulates inside the exhaust, usually inside the muffler housing.

If you did nothing but short trips of a few miles, followed by a complete cool down, you're probably accumulating  around a quart to half gallon of water in each of the mufflers, all the time, because it never gets hot enough to "cook" all the water out. So that water sits in the muffler, and rusts it out over time.

Getting up to highway speed and driving for 30-60 minutes every week or two gets the exhaust system hot enough to cook off all the accumulated water that gets created on short trips.

I've been working on cars for 26 years. I love it when people who don't even understand "how water gets in the engine" tell me I'm wrong.

Do you also tell your doctor how our organs work, too? [/quote]

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