best oil to use
06-26-2019, 09:29 AM
#21
Registered
iTrader: (3)
Just a generic comparison of viscosities among a few oils and grades. Higher the number, the more viscous the oil is. You can see that at operating temp, the viscosities arent drastically different. However, at 100* F, it varies a ton. Big difference between straight 50 and 15w50 at 100*, not so much at 210*
06-26-2019, 09:53 AM
#22
Platinum Member
Platinum Member
iTrader: (6)
Just a generic comparison of viscosities among a few oils and grades. Higher the number, the more viscous the oil is. You can see that at operating temp, the viscosities arent drastically different. However, at 100* F, it varies a ton. Big difference between straight 50 and 15w50 at 100*, not so much at 210*
06-26-2019, 11:04 AM
#26
Registered
iTrader: (1)
06-26-2019, 12:25 PM
#27
Registered
Has anyone used?
Driven Racing Oil MR50 is high performance marine oil with the extra that your engine needs. MR50 performance motor oil is more than extra anti-wear protection--it's a defense against moisture! Driven Racing Oil motor oil blends an advanced synthetic formula with a high zinc content, plus rust and corrosion inhibitors, to deliver the right protection for your high-output marine engine for both boating season and winter storage. Protect aggressive cam profiles, guard against rust, and defend against ethanol blended fuel with the right oil--Driven Racing Oil MR50 marine high performance oil.
Driven Racing Oil MR50 is high performance marine oil with the extra that your engine needs. MR50 performance motor oil is more than extra anti-wear protection--it's a defense against moisture! Driven Racing Oil motor oil blends an advanced synthetic formula with a high zinc content, plus rust and corrosion inhibitors, to deliver the right protection for your high-output marine engine for both boating season and winter storage. Protect aggressive cam profiles, guard against rust, and defend against ethanol blended fuel with the right oil--Driven Racing Oil MR50 marine high performance oil.
06-26-2019, 05:43 PM
#29
Registered
iTrader: (3)
A bit off topic in regards to oil grades and brands, but I took note of the oil pressure on the 485hp 6.4L in my Challenger. 0w40 Pennzoil synthetic, all readings taken at idle in gear.
60*=55psi
100*=53psi
125*=48psi
150*=42psi
175*=34psi
200*=29psi
I see alot of guys complaining of low oil pressure at idle after a run in the boats. usually they want to go to a heavier weight oil to solve the problem. While it may help, often its because they are simply getting the oil too hot. You take a big block thats custom built, chances are its gonna have fairly loose clearances. When that oil gets hot, as in 220, 230, 240* plus, even a 50wt oil is gonna be pretty dam thin. Thin oil, loose clearances, its gonna be bleeding out internally at idle from the mains. You knock that oil temp down from 230* to say, 180, theres a good chance you'll find 10 or more psi at idle after a hard run.
60*=55psi
100*=53psi
125*=48psi
150*=42psi
175*=34psi
200*=29psi
I see alot of guys complaining of low oil pressure at idle after a run in the boats. usually they want to go to a heavier weight oil to solve the problem. While it may help, often its because they are simply getting the oil too hot. You take a big block thats custom built, chances are its gonna have fairly loose clearances. When that oil gets hot, as in 220, 230, 240* plus, even a 50wt oil is gonna be pretty dam thin. Thin oil, loose clearances, its gonna be bleeding out internally at idle from the mains. You knock that oil temp down from 230* to say, 180, theres a good chance you'll find 10 or more psi at idle after a hard run.
