🔥 Zerostart 3400063 Engine Oil and Fluid Heater - 3.5" x 4.5", 120V, 250W - Silicone Pad Heater for Transmission, Reservoir, and Hydraulic Fluid Review

I use them for engine and transmission oil and they work great. We regularly see temperatures of -50 degrees in winter and I had no problems with their installation and connection this winter.

I put one on the oil pan of my diesel tractor. That works great. The tractor started at -10F this morning. Pretty easy to apply. Make sure you have enough flat space for your pillow size. For surface preparation, it makes sense to have a sander or disc sander.

This heater is a fire hazard. I installed it according to the instructions. When first used, after 5 minutes it started smoking, turned brown, the glue bubbled, the device detached from the metal surface. I disabled it and will never use it again! I will try the magnetic variant with a thermostat.

Heating pads work very well. They heat up the entire engine compartment in about 2 hours. I don't usually leave them on that long. The oil is hot and since I am using synthetic oil it is impossible to overheat the lube. Overall, I am very happy with the purchase and would highly recommend the product.

I've had good luck with other Wolverine heaters in the past and assumed it would be the same. It installs easily and works great for 2 months of occasional use. Then something shorted out in the heating pad. Unfortunately I bought it a year ago and due to the weather and a shoulder injury I only had time to fit it so the warranty has expired.

Used less than a year, mounted on the bottom of the oil pan. The bezel has been correctly set to the ground metal and the edges sealed with safe RTV Temp sealant. I walked to my truck one morning and smelled of smoke/burning. Ambient temperature was -25°F (Fairbanks, Alaska). The truck was connected to the network via a timer for the night, which turned on and off alternately. After removing this pad, I was able to puncture it with my finger. I would suggest buying a more reputable brand which…