This is simply an FYI, not an oil thread or an argument. You may want to experiment if you're interested.
I've been running Mobil 0W-40 for a number of years, and in various vehicles. On my '93 1FZ-FE I'd started noticing start-up rattle (cam chain) that lasted one or two seconds. I was also running the large Napa Gold filter. This vehicle does not burn or leak oil, so I don't pay a whole lot of attention to the oil between changes. I noted that I had about 5,700 miles on this oil; it was time to change the oil IMO.
I got a Denso filter, but the small size (if you don't know what I'm talking about do a search), and I had a case of Costco Chevron Supreme 5W-30 dino juice in the garage already. Results: I've done a few cold, morning starts, a couple days to drain down, and had zero rattle. I know I've introduced two variables which makes this a poor experiment regarding speed of oil pressurization, but take it for what it's worth.
Scotty
I've been running Mobil 0W-40 for a number of years, and in various vehicles. On my '93 1FZ-FE I'd started noticing start-up rattle (cam chain) that lasted one or two seconds. I was also running the large Napa Gold filter. This vehicle does not burn or leak oil, so I don't pay a whole lot of attention to the oil between changes. I noted that I had about 5,700 miles on this oil; it was time to change the oil IMO.
I got a Denso filter, but the small size (if you don't know what I'm talking about do a search), and I had a case of Costco Chevron Supreme 5W-30 dino juice in the garage already. Results: I've done a few cold, morning starts, a couple days to drain down, and had zero rattle. I know I've introduced two variables which makes this a poor experiment regarding speed of oil pressurization, but take it for what it's worth.
Scotty