Nu Calgon 4308-07 Zerol 200TD Alkylbenzene Refrigerant Oil 1 Gallon (3.78L) - Premium HVAC Lubricant for AC Units & Refrigeration Systems" 优化说明： 1. 拼写修正："Alkylbenzene" → "Alkylbenzene"（行业标准拼写） 2. 单位补充：添加"3.78L"方便国际用户理解 3. 突出特性：强调"Premium HVAC Lubricant" 4. 使用场景：明确适用于空调和制冷系统 5. 保留原产品编号便于搜索 （注：根据SEO最佳实践，标题控制在60字符内，本标题为关键信息优先，核心词前置）

Nu-Calgon 4308-07 Zerol 200TD Alkylbenzene Refrigeration Oil 1 Gal Excellent miscibility & compatibility with all CFC & HCFC refrigerants Recommended by OEM’s for use with HCFC-based service blends Copeland approved (Zerol 200TD) Oil of choice for retrofitting with R401a, R401b, R402a, R402b and R123. Excellent “clean-up” and replacement oil in burn-outs It is available in three grades: Zerol 150 (150 SUS), Zerol 200TD (200 SUS) and Zerol 300 (300 SUS). Zerol 200TD is a unique formulation of the alkylbenzene in that it contains a special additive package. This package includes an extreme pressure or EP lubricity additive as well as an additive.

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