Stihl Superlub FS Gear Lubricant 80 g (0781 120 1117)
Stihl's Superlub FS gear grease in an 80 g tube — the lubricant Stihl specifies for the angle gearbox on its brush cutters and trimmers.
In short:Stihl Superlub FS (part 0781 120 1117) is a high-performance gear grease in an 80 g tube, made for the bevel gearbox at the cutting end of Stihl brush cutters and trimmers. Topping it up keeps the gears lubricated and stops the gear head running hot. Stihl manuals typically ask you to check the gearbox grease regularly, roughly every 50 operating hours, and add a little through the fill hole, without packing it full.
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Pros
- The grease Stihl specifies for its gear heads
- Tube nozzle fits the gearbox fill hole
- 80 g lasts many top-ups
Cons
- Other brands may specify a different grease — check your manual
- Couldn't be dispatched to us in October 2026
What it is
Stihl Superlub FS is Stihl’s high-performance gear grease for the angle gearbox — the gear head at the cutting end of the shaft — on its brush cutters and trimmers. It comes in an 80 g tube, part number 0781 120 1117. When we checked in October 2026 the Amazon.co.uk listing couldn’t be dispatched to our location.
Why it matters
The gearbox turns the drive shaft’s rotation through an angle to drive the head, and the bevel gears inside need grease to avoid wear and heat. A gear head that’s too hot to touch after a session, or that’s started to grind, often needs grease — see why a brush cutter gearbox gets hot.
How to use it
Check your manual for the interval; Stihl typically suggests checking the grease about every 50 hours of use. Clean around the fill screw on the gearbox, remove it, and squeeze in a little grease — a few grams is usually plenty. Don’t pack the gearbox full, as excess grease heats up and is forced out past the seals. Step-by-step instructions are in how to grease a brush cutter gearbox.
Other brands
Husqvarna, Makita and other makers sell their own gearbox greases; using the one your manual names is the safest choice. Routine checks are listed in brush cutter maintenance.
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