Customers order from all over the country, and the maintenance calendar in a snow state looks very different from one along the Gulf. In the North, most equipment gets a hard seasonal switch: mowers off, snow equipment on. In the South, mowers may run most of the year and storage is short, but heat and humidity work on fluids and metal. These are general guidelines; your owner’s manuals set the actual intervals.
Season by season
| Season | Colder northern climates | Warmer southern climates |
|---|---|---|
| Late winter (Feb–Mar) | Service mowers and tillers in the shop; keep snow equipment ready | Mowing season starts; change mower oil, sharpen blades |
| Spring (Apr–May) | Store snowblowers and plows; de-winterize boats, bikes and mowers | Boat and powersports season in full swing; check cooling systems |
| Summer (Jun–Aug) | Peak mowing and boating; mid-season oil changes by hours | Heat is the stress: watch oil levels, air filters and coolant |
| Fall (Sep–Nov) | Store mowers, boats and bikes; prep snowblowers, plows, generators | Fall overseeding and leaf work; hurricane-season generator checks continue |
| Winter (Dec–Jan) | Snow equipment runs; diesel cold-flow; winter shop projects | Short storage for some equipment; shop projects; generator checks |
What changes with climate
- Cold: oils with good cold flow, diesel fuel gelling, battery strength and frozen water in pumps.
- Heat: oil oxidation, cooling systems, air filters in dust, and fuel aging faster in hot storage.
- Humidity and salt: corrosion on stored equipment, trailers and anything near the coast or road salt.
Twice-a-year checklist for every region
- Change oil by hours or months, whichever comes first in the manual.
- Treat fuel for anything that will sit more than a few weeks.
- Check air filters more often in dusty or heavy-pollen seasons.
- Grease fittings on mowers, trailers and implements.
- Inspect batteries and use a maintainer on stored equipment.
- Protect bare metal before a long storage period.
- Run generators under load on the schedule the manual recommends.
Frequently asked questions
If my mower runs all year, when do I change the oil?
By hours of use, per the manual. Year-round mowers often reach the hour interval several times a year.
Do I need a different oil viscosity in the South?
Possibly. Many small-engine manuals list viscosity by temperature range. Use the grade that fits your typical temperatures.
Does short storage still need fuel stabilizer?
Fuel begins to degrade within weeks. If equipment will sit more than about a month, treating the fuel is a reasonable habit.
AMSOIL products for this job
- AMSOIL Gasoline Stabilizer. AMSOIL says: “Helps keep fuel fresh up to 12 months”; “Protects against varnish and gum buildup”.
- AMSOIL 10W-30 100% Synthetic Small-Engine Oil. AMSOIL says: “Protects up to 200 hours”; “Helps extend engine life”.
- AMSOIL Heavy-Duty Metal Protector. AMSOIL says: “Protects against the effects of salt, moisture and chemical corrosion”; “Leaves a long-lasting (up to several years), protective, wax-like, amber coating”.
Product wording above is quoted or summarized from amsoil.com. Read each product’s label and data sheet for directions.
Use AMSOIL’s official lookup guide to see what is listed for your vehicle or equipment, then order online whenever it suits you.