patrician12 0 Posted July 16, 2005 Has anyone any idea what operating oil temperature is in a typical L- head engine of the 10-20 horsepower variety?I would like to installed an oil temp gauge but have to know what range to buy. Share this post Link to post Share on other sites
BLT 717 Posted July 16, 2005 I called Briggs and they won't give it. My best guess, that on a 120 degree F day, you shouldn't have more then 250 degree F. This is provded that fins are clean and fan has all of its blade members. Keep in mind that this is an educated guess. Share this post Link to post Share on other sites
Joer 0 Posted July 16, 2005 Oil starts breakdown at 275-300 degrees F. Synthetic oils use the higher number. Operating temps should be between 195- 250 F.. Share this post Link to post Share on other sites