I use to use grease but switched to oil years ago.  It only took one tear down of a heavily used reel with braid that had grease on the worm gear for me to realize that the potential for junk to build up in the corners of the frame is around 100%.  I was then convinced by DVT that this was the way to go.  It has worked great for me since. 

I use a little Yamalube marine gear oil, leftover from outboard oil change.

I only open & re oil if I water soak a reel somehow.  Very rare since I only take 2 rods at most on the boat.  1 if on foot.

 

Yes !!   I dropped it off the dock !!!!

On 10/9/2018 at 1:13 PM, Jonny15678 said:

Is it ok to put grease instead of oil on the part of metal that the line guide slides on? 

*Tip : Go to Walmart and buy the 75W or 90W blue bottle gear oil (synthetic or conventional gear oil - doesn't mater) and use sparingly on your bait cast reel worm gears ... It is just the right thickness , offers great protection and stays put real well . I found it doesn't get dirty very fast - but if need be spray the worm gear down with WD4 with straw adapter to clean then re-apply the fresh gear oil . 

On 10/12/2018 at 6:14 PM, OnthePotomac said:

Aways used ReelX on mine.  No problems for the last 18 years at least.

I use both ReelX grease and oil products great stuff. Never had any issues.