The right engine oil

[Stanton]

Valvoline VR1 racing oil, high zinc, 10w-30 winter, 20W-50 summer....may be over kill but why not?......

Realize that you're responding to a post that's more than a year old...

[Clemsonfor]

I use what IH says to use.....30W LO-ASH oil. In gassers you need a lower sulfated ash content to ward off a large list of engine issues. The 10-30 and 15-40 oils in the world may/do NOT have this. Why risk a failure??

In the 40s and 50s they didn't have the highly engineered oils we have today. I personally would use a multi weight oil all year long. It's a superior product from ad anved engineering. Most oils have enough zinc content but personally I would use a diesel rated /SN rated oil as well for the higher zinc content.

[Clemsonfor]

Valvoline VR1 racing oil, high zinc, 10w-30 winter, 20W-50 summer....may be over kill but why not?......

Realize that you're responding to a post that's more than a year old...

And because of that now I did as well. Haha

[BillBolt]

I'll tip the cart. I use Brad Penn 20-50 synthetic , low ash , high zinc and malibdeum sulfide. Starts good in cold and good oil pressure in the hot summer.

[BigBill]

Well there’s a difference between using your fcub for work or show. Go by your owners manual. I been using Mobil delvac 15/40 motor oil. In all my cubs in the summertime. One cub that plows snow I put in 10/30wt motor oil.

Food for thought,
With my cub cadets I found out in the summertime the 30wt oil is the best. If I use any other weight oil they burn oil. Again in cold weather it’s 10/30.

For very cold temps I even go with 5/30 at oil.

On cold start ups that first rod bearing away from the oil prices ump is the last to get oil pressure.
Either use a block heater or oil heater too.

Go by your owners manual.