Advice for POST ARX treatment

[AEA]

I'm going to be using ARX with 15w40 per members advice for 2 cycles on both vehicles below.

However, I'm not sure what to run POST ARX. Really leaning towards GC after all the reviews on here.

1) 98 Grand Cherokee 5.2 (currently using Mobil 1 10w30 with WIX filter)

2) 97 BMW 528i (previous owner was using 20w50 Valvoline "racing" (was on the old invoices), not sure what filter)

TIA

 

[SSDude]

You seem to know what you are doing. GC is a great choice.