Nothing takes longer to heal than an exhaust scar. I have matching ones on each leg. One from the red hot external pipes on a Frazer Nash-Bristol LMR Mk.1 F2 car, when my foot slipped on the oily alloy floor when getting out of this car, which in F2 form has the doors welded shut. The second was on my M3W on the first run of the year, when collecting it from its winter storage in Cogolin, near St Tropez. I had not used my French wallet since the previous autumn, and when I needed my French debit card to fill up with fresh 98 fuel, the card had stuck in the wallet. When I finally got it out, it flew out of my fingers and landed just inside a front tyre. Without thinking I bent down to pick it up and pressed my bare leg (south of France shorts weather) against the red hot catalyst. Result, a full thickness burn about 4cm in diameter. Luckily I had a first aid kit in the car from doing a rally the previous autumn, so after cooling the burn with bottled water, I was able to put a sterile burn dressing on it. Given my age then of 74 and the very strong meds I take to control psoriatic arthritis, which slow the process, the burn took two and a half months to heal.
Wilson
