citytransplant
Silver Member
1. It's my understanding that engine oil breaks down over time, regardless of engine operation. That is to say oil should be changed at certain time intervals even if the engine itself hasn't been used much. If true, why does unused engine oil still in the container have an indefinite shelf life (or does it)?
2. Owner's manual for my Farmtrac 27 hp notes that hydro fluid should be changed every 400 hours. While I've owned this unit for 15 years, I only have 350 or so hours in the saddle. That's to say the hydraulic fluid in my tractor is 15 years old. I do plan to change it soon (as other maintenance items are due) but should hydraulic fluid also be changed at certain time intervals, regardless of engine usage?
2. Owner's manual for my Farmtrac 27 hp notes that hydro fluid should be changed every 400 hours. While I've owned this unit for 15 years, I only have 350 or so hours in the saddle. That's to say the hydraulic fluid in my tractor is 15 years old. I do plan to change it soon (as other maintenance items are due) but should hydraulic fluid also be changed at certain time intervals, regardless of engine usage?