I'm tempted to just put a "diaper" on it until I have the time / inclination to get under there and figure out where it's leaking!
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Baby's got new shoes ...
I recently
bought a (marginal) set of used Bridgestone Potenza RE92 low rolling resistance tires. These are the ones that were designed specially for the first generation Honda Insight.
The tires are 14 inch diameter. Since all the wheels on the Suzukiclone fleet are 13 inch size, I also acquired and refurbished a set of lightweight alloy 14 inch wheels originally from a Swift GT.
Just put the set on the ForkenSwift.
Insight owners swear by these tires. I can definitely notice an improvement over the old snow tires. They're lighter too - the snows + 13 inch steelies weigh in at 28.5 lbs apiece; the 14 inch alloys + RE92's are 23.5 lbs.
I'm expecting a noticeable improvement in efficiency.
These wheels/tires will move around the fleet as need be.