Hi all, I drive a 2006 Evo with a built engine. I built it myself so I have no builder I can ask this question.
Conventional wisdom says run a thicker than usual oil as the oil clearances on a built engine are generally greater than stock built engines. Originally I went with 20w-50 oil and dropped down to 5w-50 oil for the winter. I ended up having to put in 5w-30 oil and at the same time I installed an oil gauge.
I didn't have an oil gauge for the previous oil weights but on my current 5w-30 oil, my oil pressure is around 100psi on initial start up and idles at around 20 once fully warmed up. I'm not worried about those oil pressures (I'm sure it's better to have too much than too little) but I'm thinking that at 5w-30, those oil pressures are pretty fine and I wouldn't want to go for a thicker oil, in fact I could almost go to a thinner oil.
Does that make sense or does anyone disagree? Should I even go to a 0w-20 oil? Also do you think I should just run the same oil through winter and summer? I'm in Michigan so we have a pretty wide range of temperatures throughout the year.
I appreciate the help
Conventional wisdom says run a thicker than usual oil as the oil clearances on a built engine are generally greater than stock built engines. Originally I went with 20w-50 oil and dropped down to 5w-50 oil for the winter. I ended up having to put in 5w-30 oil and at the same time I installed an oil gauge.
I didn't have an oil gauge for the previous oil weights but on my current 5w-30 oil, my oil pressure is around 100psi on initial start up and idles at around 20 once fully warmed up. I'm not worried about those oil pressures (I'm sure it's better to have too much than too little) but I'm thinking that at 5w-30, those oil pressures are pretty fine and I wouldn't want to go for a thicker oil, in fact I could almost go to a thinner oil.
Does that make sense or does anyone disagree? Should I even go to a 0w-20 oil? Also do you think I should just run the same oil through winter and summer? I'm in Michigan so we have a pretty wide range of temperatures throughout the year.
I appreciate the help