I have a 1992 Mazda MPV with the 3.0 V6 (JE). These engines are known for having noisy lifters that are quite loud until the engine warms up. I have been using GC with good noise reduction, however, I can't seem to find GC in this area anymore. I would like to use a synthetic, but I find Mobil 1 does not quiet the lifters like GC. I have used additives like Valve-Medic with good results, but I would rather not use an additive. Should I go with a thicker or thinner oil? Any suggestions?