Best Grease for Trimmer Head (2026): 4 Picks Compared
Four greases for trimmer head gearboxes, from trimmer-listed bevel gear grease to white lithium tubes, scored on what each listing states.
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Top picks at a glance
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- 1
Best OverallHusqvarna Bevel Grease9.5/10View on Amazon - 2
Best for Grease FittingsMakita Gear Grease N009.4/10View on Amazon - 3
Best 8 oz ValueBTAS White Lithium9.4/10View on Amazon - 4
Best Small TubePermatex White Lithium9.3/10View on Amazon
A string trimmer earns its keep on the rough edges of a property: fence lines, ditch banks, the ground around outbuildings where a mower cannot go. The trimmer head takes the abuse, and its small gearbox needs grease to keep the gears turning smoothly. The best grease for trimmer head use is one that stays in place, resists moisture and suits the gearbox, and the four below are scored on what each listing states.
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Quick picks
- Best Overall Husqvarna Bevel Grease: Made for trimmer bevel gears; fits the listed Husqvarna models. Check price on Amazon
- Best for Grease Fittings Makita Gear Grease N00: Tube tip fits grease fittings; listed for string trimmers. Check price on Amazon
- Best 8 oz Value BTAS White Lithium: NLGI 2 grease, 8 oz, with EP performance and water resistance. Check price on Amazon
- Best Small Tube Permatex White Lithium: 1.5 oz white lithium for metal-to-metal and metal-to-plastic. Check price on Amazon
Our acreage picks
Husqvarna Bevel Gear Grease 100g for String Trimmers and Brushcutters
Bevel gear grease in a 100g tube, listed for string trimmers and brushcutters, with a 75W-140 viscosity and a fitment list of stated models.
Read the full review
The listing is the most trimmer-specific of the four: a bevel gear grease listed for string trimmers and brushcutters, with a fitment list of stated Husqvarna models and a 75W-140 viscosity. The tube form suits the small gearbox of a trimmer head, and no contradictions appear between the title, bullets and spec table.
Pros
- Listed specifically for string trimmers and brushcutters
- Bevel gear formula with a stated 75W-140 viscosity
- Lithium grease in a tube for the small gearbox
- Fitment list names the compatible models
Cons
- No warranty term is stated
- 100g is the smallest stated amount here
- No temperature range is stated
- Only fits the listed models
Makita 197439-7 Hedge Trimmer Gear Grease N00, 2.8 oz
Gear grease in a 2.8 oz tube with a tip that fits grease fittings, listed for hedge trimmers and for string trimmers and brush cutters.
Read the full review
The listing centers on hedge trimmer gear maintenance, but the spec table states the grease is designed for use on string trimmers and brush cutters too. The tube tip is designed to fit grease fittings, which matters when the gearbox has a fitting rather than an open fill. No contradictions appear in the listing.
Pros
- Tube tip is designed to fit grease fittings
- Listed for string trimmers and brush cutters
- Formulated for demanding applications and conditions
- Keeps gears lubricated for smooth operation per the listing
Cons
- No warranty term is stated
- No temperature range is stated
- No NLGI grade is stated
- 2.8 oz is a small amount for frequent use
BTAS White Lithium Grease NLGI 2, 8 oz, Water Resistant
White lithium NLGI 2 grease in an 8 oz size, with EP performance, water resistance and a stated range of -22°F to 251°F.
Read the full review
This is the general-purpose pick: white lithium NLGI 2 grease with stated EP performance, water resistance and rust prevention, in the largest container here at 8 oz. The stated operating range of -22°F to 251°F covers outdoor seasons. One oddity: the spec table lists a flash point of 1100 °C, which is not plausible for grease, so the title and bullets are trusted over that figure.
Pros
- 8 oz is the largest amount here
- NLGI 2 grade with EP performance stated
- Water resistant with rust and corrosion prevention
- Stated operating range of -22°F to 251°F
Cons
- No warranty term is stated
- Not listed specifically for trimmer heads
- The 1100 °C flash point in the spec table looks wrong
- Auto and farm focus, not trimmer gear
Permatex 80345 White Lithium Grease, 1.5 oz
White lithium grease in a 1.5 oz tube for metal-to-metal and metal-to-plastic, with a stated flash point of 388 °F.
Read the full review
A small 1.5 oz tube of white lithium grease listed for metal-to-metal and metal-to-plastic, with stated resistance to moisture and high heat and a 388 °F flash point. The listing calls it stainless and non-toxic. It is the least trimmer-specific pick, aimed at hinges, latches and tracks.
Pros
- Works on metal-to-metal and metal-to-plastic
- Stainless and non-toxic per the listing
- Withstands moisture and high heat per the listing
- 1.5 oz tube is easy to store
Cons
- No warranty term is stated
- 1.5 oz is the smallest amount here
- Not listed specifically for trimmer heads
- Hinge and latch focus, not trimmer gear
Side-by-side specs
| Grease | Acre Score | Type | Size | Listed for | Warranty |
|---|---|---|---|---|---|
| Husqvarna Bevel Grease | 9.5/10 | Bevel gear grease | 100g | String trimmers, brushcutters | Not stated |
| Makita Gear Grease N00 | 9.4/10 | Gear grease | 2.8 oz | String trimmers, brush cutters | Not stated |
| BTAS White Lithium | 9.4/10 | White lithium, NLGI 2 | 8 oz | Auto, farm, industrial | Not stated |
| Permatex White Lithium | 9.3/10 | White lithium | 1.5 oz | Metal-to-metal, metal-to-plastic | Not stated |
Specifications are manufacturer rated as listed, collected 23 October 2026.
Buying guide: choosing the best grease for trimmer head
Trimmer-listed vs general-purpose grease
Two picks are listed for trimmer gearboxes: the Husqvarna bevel gear grease, made for string trimmers and brushcutters with a stated fitment list, and the Makita gear grease, whose spec table states it is designed for use on string trimmers and brush cutters. The BTAS and Permatex are general white lithium greases that can work on metal gears but are not listed for trimmer heads.
Tube size and grease fittings
Sizes run from 1.5 oz to 8 oz. The Makita tube tip is designed to fit grease fittings, which suits gearboxes with a fitting. The Husqvarna 100g tube and the Permatex 1.5 oz tube suit occasional use, while the BTAS 8 oz tube suits owners who grease many fittings. For the trimmer itself, see the trimmers and blowers hub.
Water resistance and temperature range
Trimmer gearboxes work outdoors, so moisture resistance matters. The BTAS listing states water resistance and an operating range of -22°F to 251°F, and the Permatex listing states it withstands moisture and high heat with a 388 °F flash point. The Husqvarna and Makita listings do not state a temperature range.
Read the spec table with care
The BTAS spec table lists a flash point of 1100 °C, which is not plausible for grease. When a spec table figure looks wrong, trust the title and bullets: the BTAS is still a white lithium NLGI 2 grease with stated EP performance and water resistance. The same check applies to every listing here.
Turn rise and run, or a phone level reading, into degrees and percent, then compare it with typical mower slope ratings.
Wear eye and hearing protection, long pants and sturdy footwear, and keep bystanders well back while the line or blade spins. Clear stones and debris first, and stop the engine or remove the battery before clearing the head. Refuel only with the engine off and cool. See OSHA landscaping safety. Read our Safety Disclaimer.
Matching It to Your Property
- The Husqvarna and Makita picks are the trimmer-listed greases; choose one if your trimmer head has a gearbox that takes grease.
- The Makita tube tip fits grease fittings, which suits gearboxes with a fitting rather than an open fill.
- The BTAS 8 oz tube suits owners who grease many fittings across a property.
- The Permatex 1.5 oz tube is the easiest to store for occasional light greasing.
The Acre Score explained
| Product | Acre Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| Husqvarna Bevel Grease | 9.5 | 30 | 21 | 20 | 0 | 0 |
| Makita Gear Grease N00 | 9.4 | 29 | 20 | 20 | 0 | 0 |
| BTAS White Lithium | 9.4 | 27 | 20 | 21 | 0 | 0 |
| Permatex White Lithium | 9.3 | 24 | 19 | 19 | 0 | 0 |
Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score.
The Acre Score scores each grease on performance, build, value, safety and warranty, from what the listing states.
FAQ: mowing large lots
How do you grease a string trimmer head?
The listings here do not give greasing instructions. The Makita listing notes its tube tip is designed to fit grease fittings, and the Husqvarna grease is listed for bevel gears in string trimmers. Follow the trimmer maker’s manual for the procedure.
What is a trimmer head?
The trimmer head is the part of a string trimmer that holds the cutting line. Its small gearbox contains the bevel gears these greases are made for, and the Husqvarna and Makita listings name trimmer gearboxes as their use.
How long do trimmer heads last?
None of the listings states a lifespan. Regular greasing of the gearbox, per the trimmer maker’s manual, is part of keeping the head in service.
Can I use white lithium grease on a trimmer head?
Two picks here are white lithium grease: the BTAS, an NLGI 2 grease with stated EP performance and water resistance, and the Permatex, listed for metal-to-metal and metal-to-plastic. The trimmer-listed picks, Husqvarna and Makita, are gear greases made for trimmer gearboxes.
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