While doing research for my Isuzu MU Wizard (UCS69), I found that there was not that much information freely available online. It was also very difficult to find the owners' manual. In the end, I downloaded a PDF copy of a scanned manual which was shared on www.planetisuzoo.com . If you are new to Isuzu vehicles, then this is best place to start. Anyway, I've decided to share the basic service data from the booklet here in the hopes that it will make your life easier when doing service for your Isuzu. This is basically for the 4JG2 engine model. Item Capacity Replacement Period Recommended Brand Brake fluid Below maximum level on the tank Every 2 years ATF 8.0L Every 2 years Transfer oil 1.45L Every 40,000 km (2 years) Front differential oil 1.5L Every 40,000 km (2 years) Rear differential oil 1.8L Every 40,000 km (2 years) Wheel bearing grease Every 40,000 km Engine oil Approx 7.3L Every 5,000 km Oi