From what I've found, altitude makes the biggest diff. When I was in Van, Surrey, etc, I had zero smoke, and was doing better than 10 per 100. But back at 1100m... not as good. I'm gonna try monkeying with the pump a bit, to compensate for the thinner air.

Nigel, I waxed my truck a few weeks ago at Jamboree - but I used branches. Worked great to scrape all that mud off. <img src="/forums/images/graemlins/nana.gif" alt="" />

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1991 HZJ77, 1999 KZJ90, 1999 UZJ100, 1992 M101CDN2
https://www.thegearheadproject.com/category/jdm-journeys/