Cityboy 0 Report post Posted May 7, 2002 Jeff, I run 30W in my 720 Allis year around. It doesn't seem to be a problem for me in west central Illinois. It does require adding a pint about every third or fourth mowing (2+acres) but I don't think that's so bad. Just my experience,and I'll yield to the pro's! Dave Share this post Link to post Share on other sites
JeffL 0 Report post Posted May 7, 2002 I have a 4040 and I wanted to verify the oil specification in the original Simplicity owners manual. 5W-30 for colder than 30 degrees and straight 30 weight for warmer than 30 degrees. Won't the straight 30 weight be tough on the engine during initial start-up? Share this post Link to post Share on other sites
Guest Report post Posted May 9, 2002 i've had great success with Amsoil 10w40 Synthetic year round in NE Ohio. Engines run cooler in hot weather and are better lubricated in cold weather. Don't believe the crap dealers tell you about not being able to run multigrade or synthetic oils. Share this post Link to post Share on other sites
nighteye 0 Report post Posted June 8, 2002 My grandpa told me years ago to run 40w or 50w in the heat of the summer. (in an air cooled engine) I havent had any problems wih it at all. Ken Nighteye Share this post Link to post Share on other sites
FIRE 0 Report post Posted June 11, 2002 I am an AMSOIL dealer and sell synthetic lubricants for all types of engines. I live in IL. and have been useing 5W-30 in my mower year around. It has started in the dead of winter and has no problens with the heat. The synthetic oil help to dispensate the heat that is generated. If you would like more information about the oil please e-mail meat ; rkramer@danville.net and I would be more than happy to send you more information. Share this post Link to post Share on other sites
Ron_B 0 Report post Posted June 11, 2002 Hi Jeff I have been useing 5w30 year around in my 4041 working pretty hard with my loader.No problems.----Ron B Share this post Link to post Share on other sites
simplejim 2 Report post Posted June 11, 2002 i have been thinking about adding some kind of oil treat to my my old briggs like slick 50 or lucas what do you guys think... simplejim Share this post Link to post Share on other sites