冬季应正确选用农机用油（１）当气温降到接近柴油的凝固点（７℃左右）时柴油中即有石腊析出，堵塞油路，故选择柴油凝固点应低于环境最低温度５－１０℃，如选用凝固点低、流动性好的０号、－１０号、－２０号轻柴油。（２）发动机应换用粘度较小的ＣＡ２０号（原牌号Ｈ... Winter should be the correct choice of farm machinery oil (1) When the temperature dropped to near the freezing point of diesel (about 7 ℃) when there is stone wax in the diesel precipitation, clogging the oil, so choose the freezing point of diesel should be lower than the minimum temperature of 5-10 ℃ , Such as the selection of low freezing point, good liquidity 0, -10, -20 light diesel oil. (2) The engine should be replaced with a smaller viscosity CA20 (original brand H ...