Description
When your transmission starts grinding or your differential sounds like it’s full of gravel, chances are you need fresh gear oil. Old, dirty oil breaks down and loses its ability to protect those hardworking gears inside your tractor. This Lucas 80W-90 heavy duty gear oil is formulated to handle the tough conditions your equipment faces every day in the field.
What You’re Getting
- Heavy duty formula that stands up to high loads and extreme pressure
- Excellent protection against gear wear and metal-to-metal contact
- Maintains viscosity even when temperatures swing from cold mornings to hot afternoons
- Gallon size gives you enough for a complete oil change with some left over
- Compatible with most conventional gear oils for easy service
Built for Real Farm Work
This 80W-90 gear oil is the go-to choice for most tractor transmissions and rear differentials. Whether you’re running a compact utility tractor for chores around the farm or a bigger row-crop machine for serious field work, this viscosity handles the job. It’s what many equipment manufacturers specify for their manual transmissions and final drives.
Made to Last
Lucas builds this gear oil to handle the punishment that farm equipment dishes out. The heavy duty formulation resists breakdown under load and keeps lubricating even when gears are working hard. You’ll get longer service intervals and better protection compared to basic gear oils that thin out when the going gets tough.
Good to Know
Always check your owner’s manual for the right viscosity before you change gear oil. Some newer tractors call for different weights or synthetic oils. When you’re draining the old oil, it’s a good time to check the magnetic drain plug for metal shavings that might indicate wear issues.



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