Originally Posted by Mrfouche
Ok I stay in St. Louis would it be wise to use the 10-30w oil in my climate or so. Im not that car savvy when it comes to oil. What should i do about the engine rattle?
Winter use as dealer recommends, summer use 10-30W, i'm from Toronto Canada a very cold country i use 10-30W all year round, when i use 5-30W the engine rattle and noise when accel. and noise at cold start up (morning) Lexus said use 0-30 or 5-20 to reduce noise and i don't believe that.
i'm currently doing a test with Castro Edge Synthetic because somebody said it stops the rattle noise for IS250 as i know is250 engine designed with Camshaft valve and piston ring failures just wanna try if i can overcome the issue. Rattle noise from our IS250 cannot be fixed it how they designed , the piston slap is so pronounced, my car tap tap tap noise under accel. sound like pap pap pap pap it's gone at high speed and high gear. Nothing we can do bro unless you're willing rebuild your engine.
My friend has an Acura and did his test with Mobile 1 , he said Castro edge is good but it's not as good as Mobile 1 don't waste time, well i like to test out myself.