well, i think it depends on kind of reel possibly salt or freshwater......It also comes down to confidence that the products you use will give excellent performance in return. We use Yellow rocket fuel on bearings, Super Lube on gears, Reel X for corrosion protection and anywhere else in reels. I can't tell anglers enough and we encourage them in our classes to remember one thing, " a little is good, but alot is a no-no." Whatever products you choose to use, don't over do with quantity. Remember, these are fishing reels, not big old machine.There's alot of good products on the market and different shops use the products that they have the most confidence.We use these products simply because we see the same reels year after year and can see how the performance of the products uses. good luck
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Gary Yamamoto pro staff. ask us about our reel maint. video and training school