I can no longer buy Bosch filters locally, and haven't trusted Purolator after all the complaints about torn media. So I tried one of the Super Tech filters from Walmart. I hesitated because they changed suppliers a few times and I couldn't find information about the latest version. Then there's the price: how can a $3 filter work as well as a $10 automotive or $15 Honda filter? So I had the oil analyzed before and after the switch. Which means I didn't save money after all, but I was curious and others may be as well.
I ran the tests on my F6B since it gets ridden the most. The results should apply to GL1500s since GL1800s use the same filter, have similar internals, and yield very similar oil test results. I verified that with a test of my '98 Tourer in December.
The Super Tech filter worked great. All wear metal and contaminant levels were as good or better than they had been with the Bosch filter. This was the result I was hoping for. If a $3 Walmart filter gives the same result, I see no need to spend 3 or 4 times as much.
Here are the UOA results:
