dreamls1

iTrader: (25)

I am trying to find the best oil for my turbo car. i have 10w30 and when it gets hot it thins out and pressure drops to 20. What oil should i put in? i was thinking 15w50 but i cant find any. what about 20w50? should i use synthetic?

camarols1

iTrader: (17)

Is that 20psi at idle, or cruise?
20psi at idle is fine, but if you are only getting 20psi at cruise rpm's then you will need to check your oil pump out.
IMHO, thicker oil will only make a small difference in pressure readings.
Lots of guys run Rotella, some run synthetic, it's a personal preference thing.
A high quality 15w40 or 20w50 should be fine for you in the summer months.
Good luck!

dreamls1

iTrader: (25)

20 at idle, goes under a little. pump is brand new

firefly9r68

iTrader: (10)

20 at idle is fine. you need to check the pressure at about 4500 thats the key....

dhdenney

iTrader: (53)

Will be using Mobil 1 5w-40 turbo diesel truck, lots of zinc and phosphorus in the additive package (ZDDP).

dreamls1

iTrader: (25)

i saw some of that last night, thought about getting some.

dhdenney

iTrader: (53)

It's a 15,000+ mile oil in my Jetta diesel.

dreamls1

iTrader: (25)

Is it ok to use deisel oil in gas engine? Don't know if there is a diff?

Fireball

iTrader: (21)

Rotella 15W40 diesel oil

procharged355

iTrader: (13)

I would use royal purple 20 50 but 20psi at idle should be fne

dhdenney

iTrader: (53)

Yeah there's a difference--BETTER ADDITIVE PACK! If you look on the bottle, it carries API gas specs as well.

bboyferal

iTrader: (9)

I used to dip below 20 psi after hard runs... 10W-30...

I am now running an oil cooler perpendicular to my air dam, and I switched to Mobil One 15W-50.

Even after a hard run on a really hot day, my oil pressure at idle is always 45 psi now.

bravoboost

im running the same, mobile 15w50 synthetic...no problems