Spectro Transmission Oil 75W90 GL1
No additives, no nonsense—just good old-fashioned gear oil done right. Spectro’s 75W90 GL-1 is the straight-shootin’ choice for vintage gearboxes, classic iron, and anything old-school that doesn’t like modern fancy chemicals.
Smooth shifts, proper film strength, and none of that limited-slip drama. If your transmission was built before TikTok ruined society, this is what it wants.
One quart of mechanical nostalgia.
Because old metal deserves better than big-box blend trash.
Store Policies
We’re splitting the difference! In-stock items will be shipped right away, and we’ll send the rest as soon as they hit the shelves. If any backordered items are expected to take longer than 5 days, we’ll reach out to let you know what’s up and keep you in the loop.