I need to look this up every now and then so I might as well put it on my web page. For track days I run BOSCH W5DC plugs, the coldest plug the make. For around town driving I switch to the W6DC. With the W5DC, I've fouled a plug while doing a long sedate drive.
This post was written by
Jim – who has written 327 posts on UniBrain Trust.
Jim is the curator of UniBrain Motorsports, our resident photographer and the only one in the family to shoot a perfect 25. He enjoys eating Nadya's cooking and tries his best to stay out of her way while in the kitchen.