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FR-S2GT86 · 09-18-2020, 09:32 PM

So my tuner said he recommends 5W-40, but that he also wasn't AWARE OF the new GF-6 ratings that are going to be superceding (and be backwards compatible with) the existing GF-5 rated oils. He is informed now.

If you're running ANY particular WEIGHT of oil that happens to be GF-5 RATED, there may soon be a GF-6 rated oil in that same weight. You may want to get more information on this to see if your engine may benefit from the extra protection that it will provide. I believe that it will.

These new GF-6 rated oils promise superior protection over existing GF-5 rated oils.

It can't hurt to at least learn about it, right?

09-18-2020, 09:32 PM	#31
FR-S2GT86 Master Collaborator Join Date: Nov 2019 Drives: Was '15 FR-S, 6MT, Now '15 GT86 Location: West Virginia, USA Posts: 1,396 Thanks: 208 Thanked 985 Times in 597 Posts Mentioned: 20 Post(s) Tagged: 0 Thread(s)	So my tuner said he recommends 5W-40, but that he also wasn't AWARE OF the new GF-6 ratings that are going to be superceding (and be backwards compatible with) the existing GF-5 rated oils. He is informed now. If you're running ANY particular WEIGHT of oil that happens to be GF-5 RATED, there may soon be a GF-6 rated oil in that same weight. You may want to get more information on this to see if your engine may benefit from the extra protection that it will provide. I believe that it will. These new GF-6 rated oils promise superior protection over existing GF-5 rated oils. It can't hurt to at least learn about it, right?