XT855 Operator’s Manual Service - 81 10 Hour p 10 Hour Check Coolant Level Check coolant level every 10 hours. Add coolant as needed to maintain level as shown on overflow bottle. Check Engine Oil Level Check engine oil level at dipstick (2) every 10 hours. Add DEO at fill (1) as needed to maintain oil level at highest line on dipstick. CMW Task Notes Check coolant level DEAC Check engine oil level DEO Check air filter Clean radiator screen Check track tension Check hydraulic fluid level THF Lubricate excavator MPG