Spectro Premium Heavy Duty Gear Guard Oil - HD 85w140 1qt

Spectro Premium Heavy Duty Gear Guard Oil is a synthetic 85W140 gear oil formulated for V-twin motorcycle transmissions. Engineered to reduce wear, prevent rust and oxidation, and extend gear life while meeting or exceeding all major manufacturer warranty requirements.

Features

• Formulated for motorcycle transmissions
• Prevents rust, corrosion, oxidation, and gear pitting
• Reduces foaming and drag for smoother shifts
• Extends gear life through reduced wear and friction
• A.P.I. GL-5 rated
• Exceeds manufacturer warranty requirements

Specifications

• Brand: Spectro
• Manufacturer Part #: 310313
• UPC: 831556000608
• Viscosity: 85W140
• Size: 1 quart
• Weight: 2.08 lbs
• Dimensions: 4 in L × 2 in W × 8.75 in H

Fitment

Fits all V-twin motorcycles, including Harley-Davidson and Indian Motorcycle transmissions.

Frequently Asked Questions

What viscosity is this oil?

85W140 — a heavy-duty synthetic designed for V-twin transmissions in all riding conditions.

Will this void my warranty?

No — Spectro Premium Heavy Duty exceeds all major manufacturer warranty requirements.

How often should I change my transmission oil?

Follow your motorcycle's service schedule. Most V-twin riders change transmission oil every 5,000 to 10,000 miles or annually.

Is this synthetic or mineral oil?

This is a premium synthetic formulation designed to reduce wear and extend gear life compared to conventional oils.

Can I use this in both transmission and primary drive?

Check your owner's manual for specific reservoir requirements. Some V-twins use the same oil for both, others require different grades.