Rongsi 12V Oil Extractor Pump vs LAYAN 12V 100W Oil Extractor Pump

Both are 12V 100W gear-pump oil extractors that clamp to a car battery, so the core job is the same. The LAYAN is the better-documented unit: it lists flow rate (1-4 L/min), a 30-minute work cycle, current draw and three tubes in two materials, while the Rongsi listing gives almost nothing beyond the steps to hook it up. Owners of this class of pump report it works well on warm oil and struggles with cold oil, so warm the engine first either way. Buy the LAYAN for the clearer specs and tube set; pick the Rongsi only if you already know its kit fits your dipstick tube.

• Choose the Rongsi if you want the simplest 12V extractor and its included fittings match your oil pan or dipstick tube.
• Choose the LAYAN if you want published flow, duty-cycle and current figures plus a copper and PU tube set in three sizes.