What are you all using?

Can you mix Syn and normal fluid? If you did would there be a problem?

 

Pretty tough to answer a question like that when you dont say what transmission you have....

IMO, theres no reason to ever mix synthetic or dino. Use 1 or the other.

 

syn and dyno can be mixed, would hurt nothing, I think the only time you'd need to do it would be if you were low and could not get the right stuff. most times mixing oils degrades the better stuff down to the rating of the lower quality stuff, I'm with the Doc on this one, use one or the other

 

I agree on both counts.

btw, I use syn