What weight oil for SRT4?

[slasky]

I have been using mobil 1 5w30. The filler cap says 5 w 30 but the owner's manual says 10 w 30. Which is right?

[turbovanman²]

I really hate using thin oils in turbo motors, so I would use 10W40. I believe 5w30 is the correct fill but again, I think its really too thin, especially when beating on it.

[Keito]

Did you get the stack of yellow cards with the owners manual when you bought your car?
The cards are the information that overides the owners manual.
The one card says to use 5W30 instead of 10.
Since I only drive my car in the summer, I use 10W30.

[Frank]

I really hate using thin oils in turbo motors, so I would use 10W40. I believe 5w30 is the correct fill but again, I think its really too thin, especially when beating on it.

Ya but it is a pressure vs flow balance that the engine and its specifications require. Thinner oil maybe fine since tollerances are tight. The thinner oil will cause less pressure but more flow to cool and refresh components. Is that the case? I dont know but just going thin isn't really the answer and should be carefully analyized.

[slasky]

Did you get the stack of yellow cards with the owners manual when you bought your car?
The cards are the information that overides the owners manual.
The one card says to use 5W30 instead of 10.
Since I only drive my car in the summer, I use 10W30.

I did not read the yellow cards. I have been using 5 w 30 mobil 1. I change it out every 3K so I guess I should be OK.

[turbovanman²]

Ya but it is a pressure vs flow balance that the engine and its specifications require. Thinner oil maybe fine since tollerances are tight. The thinner oil will cause less pressure but more flow to cool and refresh components. Is that the case? I dont know but just going thin isn't really the answer and should be carefully analyized.

I here ya, but I like to err on the side of caution, lol!

In the winter I run 10w30 just because its cold and I am not beating on it, summer time it gets 15w40, or 5w40 because I am beating the living sh*t out of it,

[Speedeuphoria]

or 0w40

what is your cold idle oil pressure w/ that 15w40?

I saw a DCR 2.6 stroker motor, and they recomended 20w50(not sure what the clearances are)

[contraption22]

I use 5W30. No consumption problems. Always come out clean. It has a half-hearted oil cooler so I don't see the need to go thicker.

[contraption22]

or 0w40

what is your cold idle oil pressure w/ that 15w40?

I saw a DCR 2.6 stroker motor, and they recomended 20w50(not sure what the clearances are)

Wow.... a 2.4 with a LONGER stroke? I figured that would be the last thing it needs.

[Speedeuphoria]

never heard of it?

they offset grind the mains on the crank, making the journals same size as a mitsu 4g63. Custom pistons/rods ect. Oh and this is the one that the rev to 10,000rpms(suprised the pistons dont just disappear)
They say its more efficient all the way.

sounds great for rwd or awd, for fwd I would be more interested in a 2.2 de stroke

[1FastCSX289]

Why you wasting your money on that Mobil 1 crap? Put straight 50 weight non-detergent oil in it.

[Frank]

Wow.... a 2.4 with a LONGER stroke? I figured that would be the last thing it needs.

Ya, that is what Darrell Cox uses in the SRT-4... its either a 2.6 or 2.7 liter 2.4 with the mitsu head at N2O. Thats why I am not impressed at his times... it should be cake walk to run those.

Rant off!

[Jackrabbit]

The problem with too thick of oil in an OHC car is the time it takes the oil to reach the top end. 10w30 would be fine in the summer and probably winter in most places.
But out here where it gets single digits in the cold months anything thicker could cause premature wear especially on the top end.
I run 5w30 most the time, and sometimes I'll run 10w30 June-August in the race cars.

[contraption22]

Ya, that is what Darrell Cox uses in the SRT-4... its either a 2.6 or 2.7 liter 2.4 with the mitsu head at N2O. Thats why I am not impressed at his times... it should be cake walk to run those.

Rant off!

I don't think he runs the Mitsu head on the Hot Rod class car. I think he used to run that on the Pro-FWD class Shaun Carlson car when that was campaigned.

[turbovanman²]

or 0w40

what is your cold idle oil pressure w/ that 15w40?

I saw a DCR 2.6 stroker motor, and they recomended 20w50(not sure what the clearances are)

Not sure, I just use the stock guage. I just make sure to let it warm up before beating on it. Just took the head apart and no premature wear either, well unless you count the busted valves,

[Speedeuphoria]

I don't think he runs the Mitsu head on the Hot Rod class car. I think he used to run that on the Pro-FWD class Shaun Carlson car when that was campaigned.

hear ya go

[contraption22]

Well then, I do stand corrected! Been a while since I payed attention I guess!

I remember it like this:
http://www.turbo-mopar.com/forums/ph...o=5112&cat=500

[TonaChris]

Holy shnikies, I need that set up for my daytona.

[stimpy23]

To dredge up an OLD thread, I found this at work, I was wondering also about oil weight:

"The Owner’s Manual in about 3,300 of the above vehicles incorrectly recommends
Mobil 1® 10W-30 synthetic engine oil. Although this oil will not harm the engine,
emissions and fuel economy testing of the SRT-4 was performed with 5W-30
mineral based engine oil. Emission regulations require that the oil used for
emission and fuel economy testing be the same as the oil that is recommended in
the Owner’s Manual for normal driving and use."

Just passing it along because there didn't seem to be a final answer.

[turbodaytona87]

I use 5w-30 in everything I own. I mean weather is a 10w-30 or 5w-30 or even 0w-30 its all going to be the same viscosity when it warms up. So don't beat on your car when its cold(which you shouldn't do no matter what oil you have) and it'll be alright. I have 10w-30 in my Daytona now for break in, once that's done though, I'm going to run a 5w-30 synthetic.