First time replacing gear oil on new engine 03 <br />vx150TLRB. Gear oil came out as bluish color. Called dealer (he changed the gear oil at 10 hr break in)and asked why different color than yamalube gear oil. Said we use Merc premium gear lube. My questions, should I continue with merc premium oil or yamalube? Does Yamaha send the gear case empty from factory and dealer pump the gear oil?