oil

I used Shell Rotella Heavy Duty 5w40 synthetic base motor oil in my 03p5. I notice on the side of the bottle it says that it meets service designation SM but the owner's manual designates SG, SH, SJ, SL or ILSAC. It looks like the oil is made for industrial applications. Should I get it out...

Hi everyone, I have a 2003 protege 5 with the stock 2.0 and during the summer with the recommended 5w-20 it would crank a lot to start so I switch to 5w30 mobil one synthetic, and now when it's -20'C it cranks for 3-4 seconds before starting, and I was wondering if 0w-40 Synthetic would help the...

So my girlfriend and I are heading down to vegas in August, which will be around a 5000 km round trip. We are taking my P5 with 140,000 km on it, and it has not been behaving lately. Every time I start it in the morning, it puffs out a dense cloud of black smoke. It seems worse on cold...