- Mar 13, 2016
- Queensland, Australia
I am tossing up between 2 HDEO oils for a Briggs and Stratton L-Head (Side Valve) engine. I am looking for an all year suitable oil. I have access to Delo Silver 30W and Delo 400 15W-40. Our temperatures vary from 0°C to +40°C throughout the year. I am leaning towards the 15W-40 for cold lubricity and easier starting in winter. It is also 40W when warm, which would help on those +40°C days. It is a HDEO Oil, so it should keep the engine clean.