Hello. I had the same. The compressor in the summer had a normal start, and when it was getting colder in the garage, it started gradually, first turning the engine only one revolution per second for a minute, then faster and faster. For me, the reason was a shame to admit the old tar-thick oil for 5 years, not replaced. The second possible reason is that the decompressor is not working or clogged - a device that starts compression a few seconds after starting. How well it works you can hear the compressor working tone change, usually about 4-5 seconds after starting. You did not give symptoms, so I will write that the engine may be burnt or burnt, the starting capacitor may be damaged. Special oil is poured into compressors, there is no distinction between summer and winter, you can buy in any supermarket, etc. Regards. Marek.
