You take out the speedo drive gear, and then the gear acts like a dipstick. Look in your owners manual. If you don't have one say so and I'll post a pic from it to show you where on the gear the lube is supposed to go up to.
A forum community dedicated to Mazda MX-6 owners and enthusiasts. Come join the discussion about restorations, performance, upgrades, modifications, classifieds, troubleshooting, maintenance, and more!