Always do mine hot. Dunno about the whole suspension thing. I figure if contaminates are coming out of suspension either the oil/filter is completely wasted and overdue, or something is failing to keep junk from getting into the engine.
Personally I just want the drain to be over faster
I ran 0W-20 for 80,000 miles in my 18 Mazda 6 with the 2.5 NA in it. These engines aren't picky at all. Unfortunately I don't have any evidence +/- for its efficacy, but the engine was happy until I got t-boned at a stop sign.
If the conditions and road state warrant the speed limitn- drive the speed limit. Clogging up the roads is not conducive to proper traffic flow, irritates other drivers, and puts you and others and a greater risk of a traffic accident or road rage incident.
2024 CX-50 Turbo, 47290 Miles
Out:
Mobil 1 ESP 0w30, 6qts
Fram Synthetic Endurance 7317
In:
Mobil 1 0W-40 Euro FS
Fram Synthetic Endurance 7317
~9000 mile OCI. Whoops. Luckily it's all highway and I'm usually easy on the engine.
I don't think the cold rating matters at all here. A 5w30 is still going to conform to 30 weight oil rating when hot. The 5W when cold would just ensure that the oil is flung around / pumped easier when it is cold vs the straight weight oil. And a cold 5w30 is still going to be far more viscous...
Mazda's 2.5 SkyActiv NA and 6speed auto are well known for durability. The CX-5 and CX-50 both come equipped with that drivetrain. I bought a 24 CX-50 Turbo, and it's now got 25k miles on it. No regrets.
Not a bad report for 10k miles on a brand new engine. Copper and silicon should come down as the engine wears in and the initial oil fill is diluted out.
The MZR/Ford Duratec engines are awesome. Had one in a 2011 Fusion that I drove until 324,000 miles. 10,000 mile OCIs on 0W-20 and burned MAYBE 4-6Oz of oil in that time. Ran amazingly well until I had to junk the car for a bad transmission. Amazing engine.
'24 CX-50
18192 Mi
Out -
Valvoline RP 5w30
Mazda Turbo Oil Filter
In-
Mobil 1 5w30
Mazda Turbo Oil Filter
If I can remember I want to do a used oil analysis just for the heck of it at the end of this OCI. I don't see many on the 2.5T SkyActiv engine.