I assume since they quoted 4 quarts of BG Ultraguard 75016 which is a hypoid oil that the dealer is referring to fluid replacement in the rear differential. That's 4 quarts at $28.29 each for a total fluid charge of $113.16. The total for the repair including the fluid was $414.50. I though there was maybe a half a litre of gear oil there or am I mistaken? This is a dealer repair quote for a left rear axle shaft leak that was discovered during warranty work. Thanks for your help - I'm new to RAVs but have done some things on other brands.