Let's hope this thread doesn't turn into a thick vs thin war.
I was wondering if someone here ever used a 5W20 or 0W20 in the long run in an older engine (say from the 90's) for which a 30 or 40 grade oil is specified. I'd like to hear from those who tried it.
Let's take engines i have experience with as examples : Mercedes M111 engine, 4 cylinders, DOHC, duplex roller timing chain. Or the M112 engine : V6, OHC, 18v, duplex roller timing chain. What it so different in these engines from other similar engines from a japanese or american manufacturer that spec a xW20 oil? They're quite basic engines. Does they need a 3.5+ HTHS or is it just because of ACEA and their hard-on for high HTHS dual rated oils?
I don't plan on running such oil in my cars but i've not seen much about running a 20 grade oil in an old engine, especially in a MB, BMW or VAG engine and i'm curious. To my knowledge, user HTSS_TR did run M1 0W20 for many years in his E430 with a M113 engine but that's all i've seen.
I was wondering if someone here ever used a 5W20 or 0W20 in the long run in an older engine (say from the 90's) for which a 30 or 40 grade oil is specified. I'd like to hear from those who tried it.
Let's take engines i have experience with as examples : Mercedes M111 engine, 4 cylinders, DOHC, duplex roller timing chain. Or the M112 engine : V6, OHC, 18v, duplex roller timing chain. What it so different in these engines from other similar engines from a japanese or american manufacturer that spec a xW20 oil? They're quite basic engines. Does they need a 3.5+ HTHS or is it just because of ACEA and their hard-on for high HTHS dual rated oils?
I don't plan on running such oil in my cars but i've not seen much about running a 20 grade oil in an old engine, especially in a MB, BMW or VAG engine and i'm curious. To my knowledge, user HTSS_TR did run M1 0W20 for many years in his E430 with a M113 engine but that's all i've seen.