Hi Don and Patti
Beware of the butterflies! They came up from Mexico through California 3 weeks ago and were swarming across southeastern Utah last week. What a mess!! Fortunately our 2350 got the Red Rocks spa treatment while we enjoyed the pool at the excellent Oasis rv resort in Vegas .
Damn! Never thought of butterflies being a hazard. We are in one of the worst 'love bug' seasons here. If you dont know what they are, you are lucky.

My pickup was MUCH worse. The windshield was so covered, I was hunting for a clear spot to peek through. (Like the UPS truck below) And you DO NOT turn on the wipers, even with washers. You WILL be blind, and pulling over. There was ~15 cars on i95 that had to do an emergency stop after we hit a swarm monday. I saw them turn on the wipers, so I was ready for their rapid slowing. When i got to my exit, I scraped a 'porthole' with a credit card to get home easier.

Just googled 'butterflies on windshield' and it looks like SSDD with them. At least the debris is colorful.

***************************** And back to our topic in progress.

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I get ~10mpg with mine solo, and ~8.5 towing the trailer last time. I do drive fast, however, with the CC set to 75, going to 80 to make a pass. I am gonna try setting it at 65 this next trip (~250 miles each way) and see what that nets me. Give me a baseline for when I put the K&N in.