Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.
Valves are protected with special oil-scraper cups (valve seals), so the amount of oil getting onto the valves and, respectively, of revitalizant, is really slight. If the valves wear is small, this is sufficient to protect and preserve the valves. If the wear is extreme, it is necessary to replace the valves and the guide sleeves.
