Small Engines (Lawn Mowers, etc.): Oil Additive for Gas, mtd lawn tractor, briggs stratton

Question
Hi, Ben . . .

Can an additive such as Marvel Mystery Oil be added (proportionately)to gas for Briggs & Stratton 18HP, model 42A707 engine on our MTD lawn tractor?

Many thanks for your help.

Answer
Hello Stan:

Sorry for the Delay. This Question was Located in the Question Pool and I can Only Answer Questions from the Question Pool when I am Not Answering Questions here or at the Other Site I Answer Questions at. Yes. I Use Marvel Mystery Oil in my Gas at End of Every Season as a Part of Winterizing the Equipment. I have found the Best Mixture is Approximately 1 Quart to 30 Gallons. If Used More than that, you will Start having Carburetor Problems. Always  Run the engine Until it Quits and then Choke it and Try to Start it Several Times when you Winterize the Mower. The Oil from the Marvel Mystery Oil will Leave a Film that will Protect the Components of the Carburetor, Piston and Cylinder Components. You can View a Breakdown/IPL of the Engine at this Site Addy; http://www.briggsandstratton.com/maint_repair/manual_and_more/doclist.aspx?categ... and Enter the Model Numbers (XXXXXX) and the First 4 Type Numbers (XXXX) in the Appropriate Boxes and Click GO. Then Select Download PDF. If you Hit a Snag or this Does Not Correct the Problem,  I am Here if You Require More Assistance. Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Thanks.

Good Luck

Respectfully

John

PS: I am Allowed to Answer 10 Questions a Day. If you See I am Maxxed Out, then Try Submitting your Question at or Just After 8pm EST (US). My New Day Starts then. Thanks.

Respectfully

John