15w40 might be a bit thick for a gasoline engine in the winter. You could drop down to 10w30 or even 5w30 if you need to run it in the winter.
The magnet heaters help, but I'm aways skeptical at just how effective a couple hundred watts would be on a massive block of iron. You can also get "silicone heating pads" that can stick to the oil pan.
Last edited by Puffie40; 01/09/2025 6:43 AM.
