I just bought an 07 with an A&A kit. What does everyone recommend for oil as far as brand, weight, and oil change intervals? In my old 03Z06 I went off of the DIC and used 5W30, but I'm not sure about what to use with the Vortech. Any recommendations would be appreciated.

 

Nobody uses motor oil in their blown cars?

 

Since its birth, I have been using ONLY mobil 1 5w20 as directed from chevy even with the blower on that car. Also using only the mobil 1 oil filters.

 

5W-20? really?

 

Yep, thats per chevy. And nothing should change with adding the blower. Its all good.

 

Thanks Brian. How's the new mustang?

 

I would use a 30 weight, that's what I run

5W30 or 10W30

 

Its awesome, I LOVE it. But I do miss the power of the vette. Maybe I will just get the twin screw blower and call it a day. 700 at the wheels without breakin a sweat.

 

I run Royal Purple's XRP. This is designed for higher temps, and superchaged and turbos. Check out there web site. I just did my oil chabge today. I use 5W 30 XRP.

 

Well if its a self contained unit it already has the fluid in and can be bought from A and A if you change it.

If its not and fed off the motor then whatever regular oil you use for the engine like Mobil 1 5w -20 or whatever your car calls for.

Same intervals as the engine or every 3k or so.

 

My oil cap and manual both state 5W 30.

 

c6?

 

Yup, 08 LS3. I remember that my 07 LS2 stated the same.

 

I just ordered 12 quarts of Amsoil 5W-30. My buddy is a dealer for it and got it for me cheaper than I can get Mobil 1 for at Pep Boys!

 

I was wrong, I was using 5w30 mobil 1 only. I found a few extra quarts I had in the garage from the last oil change and it was 5w30. I always used that. It said it on the oil cap, but I had to run the crank case vent to the oil cap per andy at A&A. It stopped the oil consumption issue I had when the blower was installed. But yes, I used only 5W30.

 

In chosing a viscosity, I'd consider the oil temp. If your oil temps are "normal", or around 212F, I'd use either a 30 grade, or a 40 grade (not authorized per the owner's manual, but I'd venture that your blower takes the warranty out to lunch). If your oils temps are over about 230-240F or so, I'd go with a 40 grade.

The next issue is anti-wear additives. Automotive 30 grade API SM/ILSAC GF-4 motor oils put a limit on an oils primary anti-wear additive ZDDP by limiting phosphorus to 800 ppm. Almost all off the shelf oils, including the AMSOIL SAE 5w30 are impacted by this limit. Many oils get around this limit.

As an example, and an oil I'd consider for a blown motor, and one I used in my stock 02 Z06 on the track for a few years before AMSOIL came out with true racing oils is this one:
AMSOIL SAE Synthetic Premium Protection 10w40 (product code AMOQT)

This oil is a Group IV, PAO basestock, synthetic with phosphorus on the order of 1265 ppm and zinc on the order of 1375 ppm. The new racing oil I use has zinc of about 1575 ppm, but doesn't have the detergents and dispersants normally found in street oils like the one linked above.

For oil change interval, I'd follow the OLM which I've found to be pretty reliable. Additionally, for a blown motor ($$), I'd consider used oil analysis which may give you an early warning of trouble. As an example, here are several from my daily driver:
Cadillac CTS-V Used Oil Analysis