Changing the wife’s SP 500 transmission fluid and can make it if the AGL & AGL Plus can be mixed together otherwise I will have to go by more of the AGL.

I have both in partial quarts but forget what the difference is?

Thanks for any help!

Changing the wife’s SP 500 transmission fluid and can make it if the AGL & AGL Plus can be mixed together otherwise I will have to go by more of the AGL.

I have both in partial quarts but forget what the difference is?

Thanks for any help!