Try RLI Bio-plus.
Amazon or the RLI website to compare 1gal shipped cost.
I think it is similar in $/dose for long-term maintenance use, possibly cheaper, than FP.
RLI says 1oz/15gal for maintenance dosing. 1gal goes quite far.
I run it in my GSW b/c its a turbo GDI, and combined with LC20 in the oil, I hope it may somehow prevent valve build-up. Who knows if it is or not, but no issues so far @ 60k miles, running both additives since new (well LC20 started after first OCI).
Amazon or the RLI website to compare 1gal shipped cost.
I think it is similar in $/dose for long-term maintenance use, possibly cheaper, than FP.
RLI says 1oz/15gal for maintenance dosing. 1gal goes quite far.
I run it in my GSW b/c its a turbo GDI, and combined with LC20 in the oil, I hope it may somehow prevent valve build-up. Who knows if it is or not, but no issues so far @ 60k miles, running both additives since new (well LC20 started after first OCI).