G-man
Well-Known Member
Hi
Just spoke to a mechanic the family has known for years. TOld him I have a 383ci motor and that I was recomended to use 20 W 40 or 25 W 50.
Now I know there is valvoline, royal purple etc etc.
This mechanic said he would not use anything other than Penrite HPR 40/70.
Said hes stuck it in every car over the last 30 years, nobody has ever complained, engines that blew smoke stopped, etc etc etc. He said because its such a heavy oil it will find any spot thats not getting enough lubrication. He stays away from everything else. The higher performance motor you go the more reason to use Penrite 40/70 is basically what has been said. For my 383ci he swears by the 40/70 HPR.
Your thoughts?
Just spoke to a mechanic the family has known for years. TOld him I have a 383ci motor and that I was recomended to use 20 W 40 or 25 W 50.
Now I know there is valvoline, royal purple etc etc.
This mechanic said he would not use anything other than Penrite HPR 40/70.
Said hes stuck it in every car over the last 30 years, nobody has ever complained, engines that blew smoke stopped, etc etc etc. He said because its such a heavy oil it will find any spot thats not getting enough lubrication. He stays away from everything else. The higher performance motor you go the more reason to use Penrite 40/70 is basically what has been said. For my 383ci he swears by the 40/70 HPR.
Your thoughts?