Anti Freez Patch Honda Civic 1997 ((Anti Freez Leak In Engine Runs To Plugs And Makes Them White, 245000kms On Car, HELP?

Honda Civic 1997 ((Anti freez leak in Engine runs to plugs and makes them white, 245000kms on car, HELP? - anti freez patch

I have Honda Civic model 1997, I started in February, I have $ 560 to repair. But now I've lived, even while feeling the performance lost (to stop it, because) of low fuel, so I took it in Canada and said that its a leak in the liquid engine coolant and spark plugs because they are white and a marker Roatan as well.They said it was too expensive to repair, and even offered to replace the engine, I'm so confused, I want this car for me to offer service for at least a year or two.