LG GP-R386MBL

I bought this new 5.5 years ago to replace my old F&P which gave up. I have been extremely happy with it all round. The internal layout is good, the cooling is very even, no freezing of vegetables, no frost build up, very quiet and still looks new, brush SS finish. Paid $1100 NZD NOTE: today I discovered when cleaning behind the fridge that the compressor and a fan are enclosed behind a small removable panel. Looking inside I instantly saw that there was a buildup of dust over the two grills that lead to the fan and radiator, so I cleaned them with a brush, vacuum, and even my compressed air. This needs to be done annually people, or the compressor will become very inefficient. One copper pipe joint had corrosion on it, which may indicate a leak?? So I wire brushed it and covered it in JB Weld epoxy to be sure it won't leak. So I am happy with the fridge and I wanted to share this maintenance advice, remove dust from grill, or even remove the grill entirely