Originally Posted by lonewolfwalker
I am new to this world and have a
GE AC4400Cw the drive wheel make
sound like they are dry. ? How and
what type of oil would I use.
Your N-scale locomotive may have a problem that oil wont fix. There is a tendency to over oil. Locos seldom need oil, especially new ones, since they're greased at the factory. That first, factory, lubrication with grease should last for a year, or more.
Have you taken the shell off, and looked to see if the wheels, or gears are rubbing against something? Another possibility is that a gear has become loose on its shaft and isn't spinning normally.
While you're looking at the gears, you should notice grease on them. If there is none, then I'm mistaken with my guess, and they actually are dry, as you suspected. Locomotives need very little grease, and in my opinion, no oil. Oil may stay in place and never migrate around the locomotive, and/or onto the track; or not! It depends on the type of oil. Grease, on the other hand, will definitely stay in place. That's why the manufacturer uses it.
Labele makes a plastic compatible grease # 106 I believe. If, and only if, the gears are actually dry, with no grease at all, put a bit of grease the size of a match head on one of the gears in each truck. The worm gear is best, but any gear will work. Then run the loco. The grease will form a thin film all over the gears and that's all the lubrication the loco needs. To much grease or oil is not good. It will not help the loco, only attract dust and dirt into it.