There are two types. They are specified by type. I use the conductive type on battery terminals for example and under ground straps when refreshing them on older cars.

In many cases after they are cleaned up the original electroytic deposited plating protection coating on the cables terminals is pretty thin or almost non existant. It seems to do better than average in helping. All I really know is some connection treatment is better than no treatment.

I have always added some form of connection protection when working on cars electrical systems. For example petroleum based grease that is also non conductive. Was my usual go to item.

It just occurred to me one day that the conductive type of die electric grease was also silicone based as well. Plus it has a high rate of conductivity. Probably just very finely ground up metal is added to the grease.

Also being silicone based it does not attack rubber or certain types of plastic.

I switched over to conductive die electric grease not that long ago so the results are not in yet. From China to your door for a dollar gets a syringe full of it.

Medium to darker grey in color. In the product I got at least. It has high viscosity for a grease so the probability of it not getting washed away is good.

I am watching the battery terminals I have done to see if there is a noticeable reduction in corrosion appearing with time. In the old days vasoline was used by some people. Although it was also non conductive.

In practice it did prevent air from reaching the actual physical contact areas of the terminals and cable. Oxidation needs the oxygen in air to develop.

By blocking the metals access to it you win. Battery connections to the cables have always been my test vehicle for longer term performance. Of a product.

The only caution I can think of. Is you never want to use the conductive type where a non conductive type of die electric silicone grease should be used.