Twin Tubro Stealth oil ?

[Cole]

I recently purchased a 91 Stealth R/T TT and it is now time to change the oil. Oil capacity is 4.5 quarts, I was planning on 1 quart mobil 1 15w-50, and 3.5 quarts of 10w30. The reason for the 15w-50 is to thicken up the 10w30 which I believe is just a little to thin for a high horsepower turbocharged car.

I also noticed mobil 1 5w-40 which I had not heard of until yesterday. Should I stick with my orginal plan of mixing 15w-50 & 10w30, or try 5w-40?

 

[Thomas Pyrek]

http://theoildrop.server101.com/ubb/ultimatebb.php?ubb=get_topic;f=1;t=006368

The 5w-40 is Mobil's finest automotive oil. You'll have no problems because of that oil.

 

[Cole]

Yeah, I read that article. I'm just wondering if mixing the two grades is just as good as the 5w-40, and vice-versa

 

[haley10]

Personally, if your going to do a reasonable oci, I wouldn't hesitate to use the Mobil 1 10w30 straight, even. It'll help the turbo spool faster.

 

[Pitbull]

Unless your a chemist use the 5w40 Mobil synthetic.

 

[2KBMW]

Cole. There is no problem mixing
the two grades of Mobil 1. I will
be doing just that with my BMW
just to get a higher viscosity.

 

[Pablo]

What does the mfr. call for?

For sure use a synthetic. I recommend Amsoil 5W-40.

 

[Thomas Pyrek]

quote:

---

Originally posted by Cole:
Yeah, I read that article. I'm just wondering if mixing the two grades is just as good as the 5w-40, and vice-versa

---

Due to comments that people who are smarter than me have said, the mix probably won't be as good as straight Mobil 1 Truck and SUV (however, both will be fine). Mobil states that you can mix your oils, but sources here say that Mobil 1 Truck and SUV 5w40 uses better base stocks than the normal Mobil 1 oils.

 

[Cutehumor]

there is another thread recently on a mitsubishi 3000gt twin turbo on which oil to use. The dodge stealth twin turbo and mitsubishi twin turbo have the same internals

 

[Cole]

Thanks for the replies. I read the 3000GT article and it confirms what I already thought about needing a little thicker oil than 10w30 provides for out cars. I picked up a 5 quart jug of 10w30 and 1 quart of 15w-50 at walmart yesterday, and that was the first I had seen the 5w-40. Not being familiar with it, I decided to see what people here had to say about it. I'll probably just run the mix and then try the 5w-40 and see if I notice any difference.