Spectro Platinum Gear Oil Heavy Duty Full Syn Oil - HD Gear OIL 75w140 1qt

Spectro Platinum HD Gear Oil is a full-synthetic 75W140 gear lubricant formulated specifically for Harley-Davidson and V-Twin motorcycle transmissions. Reduces friction and wear while delivering smooth, consistent shifting across a wide temperature range.

Features

• Full-synthetic formulation with premium additive package
• Formulated for Harley-Davidson and V-Twin transmissions
• Reduces drag friction and component wear
• Extends gear life with superior temperature control
• Smoother, easier, more consistent shifting
• Exceeds all manufacturer warranty requirements

Specifications

• Brand: Spectro
• Manufacturer Part #: 310317
• UPC: 831556000417
• Viscosity: 75W140
• Type: Full Synthetic
• Size: 1 quart
• Weight: 2.0833 lbs
• Dimensions: 4 in L × 2 in W × 8.75 in H

Fitment

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

Frequently Asked Questions

Is this gear oil compatible with my Harley transmission?

Yes — Spectro Platinum HD is formulated specifically for Harley-Davidson transmissions and exceeds all manufacturer warranty requirements.

What viscosity is this oil?

This is 75W140 full synthetic — suitable for cold starts and high-temperature protection in V-Twin engines.

How much oil does my transmission need?

Most Harley transmissions hold 32-36 oz. Check your owner's manual for your specific model's capacity.

Can I mix this with my current gear oil?

It is not recommended to mix different brands or types of gear oil. Drain completely and refill with Spectro Platinum for best results.

Does this oil reduce shifting harshness?

Yes — the synthetic formula and additive package are designed to deliver smoother, easier, and more consistent shifting.