This gear oil replaces Lubrication Engineers LE 607 Almasol (SAE 90) with the new Duolec EP/AW/tackifier additive and a synthetic blend (LE 607 was 100% dino oil with Almasol EP/AW additive) base oil. I really liked how 607 performed and was worried when they changed the formula. It looks like it will be OK though. Vehicle-2004 Honda S2000 (AP2) Miles-46,442 Miles on diff (Torsen LSD)-46,442 Miles on oil-6,000 Diff oil capacity-0.82 qts Previous two UOA's were LE 607. This sample was the first UOA and fill of 1605. Miles on oil/6000/11,415/8000 Miles on unit/46,442/26,250/14,835 Aluminum/0/2/1 Chromium/1/1/2 Iron/79/172/188 Copper/0/0/1 Lead/0/0/0 Tin/0/0/0 Moly/0/0/0 Nickel/9/17/20 Manganese/1/4/0 Silver/0/0/0 Titanium/1/0/0 Potassium/1/1/6 Boron/44/12/32 Silicon/10/41/36 Sodium/2/2/1 Calcium/9/6/14 Magnesium/5/13/8 Phosphorus/1190/1591/1481 Zinc/11/14/11 Barium/1/0/2 SUS [email protected]/97.2/93.4/89.4 cSt [email protected]/19.69/18.79/17.83 Flashpoint F/425/425/425 Water%/0.0/0.0/0.0 Insolubles%/0.2/0.3/0.5 The drain plug had a very small amount of gray paste on it (magnet). The smallest amount I've ever seen on a drain plug. This fill had a small amount of residual LE 607, since I didn't flush the diff. I expect the viscosity will be a little higher if I do another UOA. I change the gear oil frequently (whenever the tranny fluid needs changed). It only has a 0.82qt capacity, so I figure it's good insurance.