So my 2.0 MTX Cougar has about 235k on it. I normally use 5w-20 syn and my question is.. Since I live in FL and my mileage is getting up there, should I start using 5w-30 instead? I know it will be fine if I continue changing the oil early, like i do. But it is always hot and I drive hard (bc im slo), so I'm curious if the thicker oil would be better for bearing life, given my circumstance.