Looking at getting a tiller which has this engine. I looked at manual which states if temperature is over 32 either 10w30 or SAE30 and under 32 5w30 with synthetic allowed and 10w40 will void warranty. Do companies still not recognize 30w is 30w when hot? Just thought I'd share. In Louisiana I will stick to Synthetic 5w30 as temperature gets hot and these engines are air cooled. Any opinions on this engine as I mostly have Briggs.