Yamaha

Yamaha ACC-SHAFT-LU-00 Yamalube Friction Modified Shaft Drive Oil

Name: Yamaha ACC-SHAFT-LU-00 Yamalube Friction Modified Shaft Drive Oil
Brand: Yamaha
SKU: ACC-SHAFT-LU-00

★★★★★4.7 (534 reviews)

OEM-specified shaft drive gear oil formulated for Yamaha's Grizzly and Kodiak ATV differentials — use this when the service manual calls for Mobilfluid 424.

$15.75*$16.99Save 7%

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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

Yamaha's Grizzly and Kodiak shaft-drive differentials are precision-toleranced components that respond badly to off-spec lubrication. The ACC-SHAFT-LU-00 Yamalube Friction Modified Plus Shaft Drive Oil is the OEM-specified solution for these units — engineered to meet the exact requirements listed in the service manuals for 2025 Grizzly EPS and Kodiak 450/700 models. The SAE 75W-85 grade provides the right viscosity for close-clearance differential housings, while the friction modifier additives address the stick-slip behavior that causes chatter and binding when non-specified oils are used. This formulation replaces both Mobilfluid 424 and the previous-generation Yamalube Friction Modified oil — the "Plus" designation reflects an enhanced additive package, not a different application.

Installation is straightforward — drain plug out, fill to spec, drain plug in — but pay attention to capacity. One quart is generally sufficient for a standard differential service on these models, though verifying against the service manual before you start is worth the two minutes. The real-world argument for using OEM-specified fluid in shaft-drive units is backed by owner experience: differential chatter on these ATVs often traces directly to a previous owner's use of generic 80W-90 gear oil. Yamalube's friction modifier chemistry is designed around Yamaha's specific clutch pack and gear surface materials, and the gap between spec and off-spec fluid shows up in feel immediately after a fluid change. For Yamaha owners maintaining their own equipment, this is not an area to economize.

Key Features

Friction Modified Plus Shaft Drive Oil has an enhanced addictive package over the previous offering. Use whenever Mobilfluid 424 or Yamalube Friction Modified Shaft Drive Oil is specified.

Fits GRIZZLY EPS (2025) | KODIAK 450 (2025) | KODIAK 450 EPS (2025) | KODIAK 700 (2025) | KODIAK 700 EPS (2025)

Specifications

Product Type

Shaft Drive Oil

Formulation

Friction Modified Plus

Additives

Enhanced Addictive Package

Compatibility Note

Use whenever Mobilfluid 424 or Yamalube Friction Modified Shaft Drive Oil is specified

Model Compatibility (2025)

GRIZZLY EPS, KODIAK 450, KODIAK 450 EPS, KODIAK 700, KODIAK 700 EPS

Pros & Cons

👍 Pros

OEM-sourced Yamalube formulation ensures exact chemical compatibility with Yamaha's shaft drive differential seals, clutch packs, and gear surfaces.
Enhanced additive package over the previous Yamalube Friction Modified formula — a direct upgrade without requiring a different service procedure.
Friction modification prevents differential chatter and binding that off-spec gear oils cause in these units.
SAE 75W-85 grade is purpose-matched to the tight tolerances of ATV shaft drive housings, providing good cold-flow and thermal stability.
Sold as a direct drop-in replacement for Mobilfluid 424, eliminating sourcing complications when dealer service is done in-house.

👎 Cons

One quart per bottle means multiple purchases may be necessary if performing a full system flush on a unit with higher fluid capacity.
Sold as a single-spec product — no multi-vehicle crossover applicability if your garage includes non-Yamaha shaft-drive equipment.
Price per quart runs higher than generic 75W-85 gear oils; the OEM premium is justified by specification compliance but noticeable at the register.
Not available in bulk or multi-quart packaging, which is inconvenient for shops servicing multiple units on the same service interval.

Frequently Asked Questions

Which specific Yamaha models require this oil?

The product is specified for the 2025 Grizzly EPS, Kodiak 450, Kodiak 450 EPS, Kodiak 700, and Kodiak 700 EPS. Always cross-reference your specific year and model against the service manual — earlier model years may share the same specification, but confirm before using.

Can I substitute this for Mobilfluid 424 as the service manual specifies?

Yes — Yamalube Friction Modified Plus Shaft Drive Oil is listed as a direct replacement wherever Mobilfluid 424 or the previous Yamalube Friction Modified Shaft Drive Oil is specified. The enhanced additive package in this "Plus" formulation is backwards-compatible.

What does "friction modified" mean for a shaft drive differential?

Friction modifiers reduce stick-slip behavior in the differential's clutch pack and gear surfaces, which translates to smoother engagement and less heat during low-speed maneuvers and tight turns. In shaft-driven ATVs, using a non-friction-modified oil can cause chatter, binding, and accelerated wear in the differential.

What SAE grade is this oil and why does it matter?

It's SAE 75W-85, a relatively lightweight gear oil grade suited to the close tolerances of ATV shaft drive differentials. Substituting a heavier gear oil — say, 80W-90 — risks poor cold-weather flow, higher operating temperatures, and reduced lubrication efficiency in the small-volume differential housing.

How much does a service fill require and does one quart cover a full change?

Differential fluid capacity varies by model — consult the service manual for your specific ATV. One quart is typically sufficient for a complete differential fluid change on most Kodiak and Grizzly models, but verify capacity before ordering to avoid a partial fill situation.