Paywalled. Can't read it.
But knowing the Herald it's probably "Fire engines exceed recommended service life, recommended by fire engine manufacturers who wish to make money by selling more. How dare the SNP service and maintain their fleet on a shoe string budget after 15 years of Barnett Formula austerity instead of spending wads of cash they don't have on new fire engines! Vote Tory/Reform, they'll fix it*."
*Tory/Reform promises may be a lie to get your vote, cut services more, and pocket more money for the rich, terms and conditions apply, quality of life can go down as well as up.