Deere Cool-Gard II equivalent

[sixdogs]

Deere used to label some of their 0W40 oil without the "synthetic" wording on the front. Some was even labelled "semi-synthetic" . I know this because I bought 10, five gallon pails and thought I was getting screwed.

I couldn't get a satisfactory answer from a dealer so I called JD, got the the oil engineering guys and they said there are some labels around that say semi-synthetic or even nothing about origin on the label. Oopsie. But rest assured, if it's 0W40 it is a full synthetic and it's all the same stuff.

After opening, using and smelling it, I would say that is true. FYI

 

[WinterDeere]

Depending on the Deere/Yanmar machine series, the 50,55,56 Series and the 70 Series use 10W30 diesel for summer and 5W30 for winter. I've not looked into the 90 Series.

View attachment 1678847

You can run 5W-30 year-round in those. The second number is really what dictates performance at higher temperature, and both products you're comparing are -30's. That's why they have the same max temperature in the graphic.

The only penalty for running 5W-30 over 10W-30 in summer is slightly higher oil consumption. That's because at any temperature up to their crossing point, the 5W-30 is a bit thinner than 10W-30. That's also why it stretches into lower temperature.

... and this is why most of the recommendations for the newer machines show 0W-40 covering the max temperature range. These old -50 and -55 machines would probably also include that in their recommended options, if such a product existed in the 1970's and 1980's, when those machines were introduced.

In any multi-weight oil, the first number is "cold" and the second number is "hot". It's not that the oil thickens with temperature, quite the opposite, but that it performs similarly to a straight 30-weight or straight 40-weight oil, when hot (and similar to straight 5-weight or 10-weight when cold).

 

[bmaverick]

You can run 5W-30 year-round in those. The second number is really what dictates performance at higher temperature, and both products you're comparing are -30's. That's why they have the same max temperature in the graphic.

The only penalty for running 5W-30 over 10W-30 in summer is slightly higher oil consumption. That's because at any temperature up to their crossing point, the 5W-30 is a bit thinner than 10W-30. That's also why it stretches into lower temperature.

... and this is why most of the recommendations for the newer machines show 0W-40 covering the max temperature range. These old -50 and -55 machines would probably also include that in their recommended options, if such a product existed in the 1970's and 1980's, when those machines were introduced.

In any multi-weight oil, the first number is "cold" and the second number is "hot". It's not that the oil thickens with temperature, quite the opposite, but that it performs similarly to a straight 30-weight or straight 40-weight oil, when hot (and similar to straight 5-weight or 10-weight when cold).

For temps above the 86F, the Deere chart I posted says to use SAE 30. The Yanmar chart doesn't say anything. For the 4 years running 10W30, the oil level remained the same. Nothing less. There is no oil consumption from what I can tell. I also run with the tallest possible fitting filter too.

Being up in the north, there are 2 weeks where the temps get over the temp like that. I mainly don't use the open cab tractor since it's just too hot out for me too.