Does anyone know the cST of the old havoline synthetic like a big lots in 5w-20 grade? ive heard havoline runs on the thin side and im wondering if this holds true to the synthetic, also if it does run on the thin side what do you guys think about adding maybe 1/4 or 1/3 of a bottle of VSOT to thicken it up just a tad. one reason im leaning towards VSOT is because i heard the havo. syn add pack inst too stout. also ill be running 5k changes