Clean and Attempt to Grease the Fittings

What happens here

Wearing safety glasses and gloves, the presenter cleans the visible grease fittings (also known as zerk fittings) on the loader arm's pivot points. He uses CRC Brakleen spray to loosen dirt and old grease, followed by a small brush to scrub the area clean. He then attempts to apply Lucas Oil Red 'N' Tacky grease using a grease gun, but the fitting on the right side still refuses to accept grease. He notes that mixing different types of grease can sometimes lead to incompatibilities, causing blockages or hardening, which might be a contributing factor to the current issue.

Goal: Clear external grease fittings and test their functionality.