Is there any advantage one way or the other between the older motors water pump thru exhaust and the newer motors telltale? I have a 78 or 79 Johnson 15hp and an Evinrude 15hp that is probably a 75 or 76. The Evinrude has no telltale and the Johnson has a telltale and some water exits thru the exhaust as well. They're both sweet motors, but I was going to only keep one and was trying to decide which one is the better design if that makes any sense. Thanks for any input, Bob
