Mobil 1 Tri-Syn

[metroplex]

Can I mix it with SuperSyn?

I found a huge supply of TriSyn Mobil 1 5W-30, 10W-30, and 15W-50? (red label).

 

[Quattro Pete]

I'd say so. The TriSyn could really use some of that moly that SuperSyn has.

 

[Whimsey]

This is not a scientific answer but I did and had no problems or funny looking oil, even at draining @ 5,000 mi and going through a nasty winter. Like you I had 2 quarts of 5w-30 Tri-syn left so I mixed it with 2.5 quarts of 5W-30 Supersyn. Now it's just pure Supersyn in there.

Whimsey