I typically take it for routine service whenever I sense a change, or issue. I have a tendency to opt for a major service occasionally, despite the recommendation for a minor service. The mechanics there enjoy working on my ride, because...they probably never have, on something that old...and they are well aware that it is somewhat of a Sleeper (Think the Dung Beetle in street racing lore). Once outside the pool hall, as a young guy was parking his muscle bike (Ninja? maybe) and I was starting the SW...it was a bit hesitant to fire...when it did, and I gave it a bit of juice...his head snapped around like WTF? I was thinking he might need a chiropractor after watching his shocked reaction!

Another time at a red light, there were 2 guys on a bike to my left, clearly shocked, amazed and amused to see this old hippy driving such a dated relic. The light went green, I was gone in a flash, and when they caught up with me 150 yards later, because I had backed off the gas...they were grinning and all high 5s

I've replaced the Alternator, Stripped the carburetor, rebuilt the starter motor recently as it was out of stock. Back when it was only a couple years old I installed a Racing Coil...which really boosted the power...I was no longer worried about passing. The coil I have now is the stock Suzuki one, but if I found a Racing coil for it again, I would gladly go for it. It really raised the bar.
I keep water in the car, and an eye on the temperature gauge when gridlock (macet coran) gets really bad and I am running one or both of the AC units.
When Nitrogen was first offered for tires here in Bali, I thought it was ridiculous. Only later did I try it and discover how it would extend and maintain optimal tire pressure. In the old days I carried a pump in the car, and pretty much visually checked the tires every time I left the house. Nitrogen does not permeate the tire as quickly as oxygen. Well worth the cost.
Tire slime inside the tires, as available at Ace Hardware is a good investment, against the inevitable nail or screw puncture.
I drive the SW like it is a sports car...but don't require a paid Police motorcycle escort, wherever I go.
When I see Lambos and Ferraris here in Bali?
I think somebody is trying to overcompensate for
a self perceived personal deficiency...and just a tad out of touch with the spirituality and artistry inherent in the Balinese culture and mindset.