[C66 Racing]

FYI, for those using AMSOIL, the company recently announced a 4-8 percent price increase that takes effect March 1st. For those planning to purchase, buying before the end of the month would save a few percent.

This price increase follows the rest of the industry:
Finished Lube Prices Rise
Valvoline, BP Hike Lube Prices

For those either buying AMSOIL at retail pricing, or for those interested in trying AMSOIL, please drop me a PM so I can ensure you get dealer wholesale pricing, about 25% below retail, via the AMSOIL Preferred Customer Program.
:cheers:

 

[RADARB8]

I have an 06...i run an iron block with about 650rwhp at 14psi...I live with cold winters, but only drive spring till fall. What weight and blend amsoil would u reccomend?? also tranny and rear end fluid...thanks

 

[C66 Racing]

The tranny and diff are easy - same fluids I ran in my 06 daily driver until I sold it in 09 and continue to use in my Corvette track day car:
Tranny: AMSOIL Torque-Drive Synthetic Transmission Fluid (Product Code ATD1G)
Diff: AMSOIL Severe Gear Extreme Pressure Synthetic 75w90 (Product Code SVGQT)
Note: This fluid comes with friction modifier and adding extra additive is not normally needed to prevent diff chatter. I ran this diff fluid in my CTS-V (and Vette) without extra additive. But some prefer to pick up a tube of the slip lock additive and either keep it handy if diff chatter does occur, or add a few ounces to ensure it doesn't.
AMSOIL Slip-Lock Differential Additive (Product Code ADATB)
And for the DIYer:
AMSOIL Hand Pump (Product Code G2039)

The oil discussion is really complicated. If your engine is under warranty, then you are probably stuck with an API SN 30 grade oil. To ensure the catalytic converters will last 100k plus miles and still meet EPA regulations, the API limits phosphorus to 800 ppm. Phosphorus, along with zinc, provide an oils main anti-wear additive in a compound called Zinc dialkyl dithio phosphate, or ZDDP. So, if you feel you must comply with the owner's manual regulation for an oil meeting GM4718M, which requires the current API 30 grade specification, I'd use AMSOIL's best 30 grade oil (and the one I chose to run in my stock 06):
AMSOIL Signature Series Synthetic 0w30 (Product Code SSOQT)

If your heavily modified engine does not have a warranty, so you are free to use the best oil for your application, then I would consider this oil:
AMSOIL SAE Synthetic Premium Protection 10w40 (Product Code AMOQT)

This oil comes with several benefits including higher viscosity which I feel is appropriate for your high HP application, increased ZDDP (zinc – 1378 ppm, phosphorus 1265 ppm) which will help heavily loaded parts of your engine, and it has the appropriate detergents and dispersants for a street driven vehicle. Note that this is the oil I chose to run in my Corvette at the track for several years before AMSOIL came out with a true racing oil. Since your car is used primarily in warm weather, the higher viscosity should not negatively impact wear while the engine and oil are warming up, though I would still recommend being very gentle on both the throttle and rpm until the oil is at least 150F.

Dropping you a PM about the preferred customer program.
:cheers:

 

[RADARB8]

good info. thanks for the reply and PM...........

 

[V-Guy]

Can you make the same recommendations for a more lightly modded 2007 V? I am running a cam and related mods that take me to approx. 400 rwhp, and I'm adding B&B headers and exhaust this month. Any suggestions?

Thanks!!

 

[C66 Racing]

Can you make the same recommendations for a more lightly modded 2007 V? I am running a cam and related mods that take me to approx. 400 rwhp, and I'm adding B&B headers and exhaust this month. Any suggestions?

Thanks!!

The status of your warranty would influence my choice.

Your mods are pretty mild and given the recent consumer alert by the FCC on the Magnuson-Moss act, you may have pretty decent warranty coverage. Given that, I'd probably use the Signature Series 0w30 I listed above, the same oil I ran in my stock 06. I really believe that this is the best API SN oil on the market (and it meets GM 4718M).

If you feel that your warranty is null and void and thus are willing to step away from GM and AMSOIL recommendations, I'd consider the above listed 10w40 for the same reasons I listed above. But, in cold weather, particularly if you car is a daily driver, you might consider AMSOIL's new AMSOIL Synthetic 5w30 European Motor Oil, which due to Euro specs has a better High Temp High Shear (HTHS) rating than that of a 30 grade API SN oil. I think the higher HTHS would help provide protection in the highly stressed portions of your engine.

As an example of what brand, viscosity and spec does to the HTHS:
AMSOIL 20w50 - 5.0
Mobil 1 15w50 - 4.5
AMSOIL 10w40 - 4.3
Mobil 1 0w40 - 3.8
AMSOIL 5w30 - 3.7 (Euro)
AMSOIL 0w30 - 3.2 (API SN)
Mobil 1 5w30 - 3.13 (API SN)

:cheers:

 

[V-Guy]

The status of your warranty would influence my choice.

Your mods are pretty mild and given the recent consumer alert by the FCC on the Magnuson-Moss act, you may have pretty decent warranty coverage. Given that, I'd probably use the Signature Series 0w30 I listed above, the same oil I ran in my stock 06. I really believe that this is the best API SN oil on the market (and it meets GM 4718M).

If you feel that your warranty is null and void and thus are willing to step away from GM and AMSOIL recommendations, I'd consider the above listed 10w40 for the same reasons I listed above. But, in cold weather, particularly if you car is a daily driver, you might consider AMSOIL's new AMSOIL Synthetic 5w30 European Motor Oil, which due to Euro specs has a better High Temp High Shear (HTHS) rating than that of a 30 grade API SN oil. I think the higher HTHS would help provide protection in the highly stressed portions of your engine.

As an example of what brand, viscosity and spec does to the HTHS:
AMSOIL 20w50 - 5.0
Mobil 1 15w50 - 4.5
AMSOIL 10w40 - 4.3
Mobil 1 0w40 - 3.8
AMSOIL 5w30 - 3.7 (Euro)
AMSOIL 0w30 - 3.2 (API SN)
Mobil 1 5w30 - 3.13 (API SN)

:cheers:

That is great information! To be honest, I was under the impression that adding a cam automatically voided my warranty. But I have to admit that I haven't researched it, and the cam was already in the car when I bought it and the dealer who sold it to me told me specifically that I had the 100K powertrain warranty (because they didn't know about any of the car's mods - including the cam). But I'm also adding the B&B headers this month, so I that may also affect the warranty.

Having said all that, I think I should assume that the powertrain warranty still applies when selecting fluids. That being so, I'd like to go to all Amsoil fluids and work with you to put a package together. Think we could do that?

 

[C66 Racing]

That is great information! To be honest, I was under the impression that adding a cam automatically voided my warranty. But I have to admit that I haven't researched it, and the cam was already in the car when I bought it and the dealer who sold it to me told me specifically that I had the 100K powertrain warranty (because they didn't know about any of the car's mods - including the cam). But I'm also adding the B&B headers this month, so I that may also affect the warranty.

Having said all that, I think I should assume that the powertrain warranty still applies when selecting fluids. That being so, I'd like to go to all Amsoil fluids and work with you to put a package together. Think we could do that?

Dropping you a PM.

FYI, for info on the recent announcement by the FCC which may help you out regarding either your cam or headers at some point in the future:
"Will using 'aftermarket' parts void my warranty?
No. An 'aftermarket' part is a part made by a company other than the vehicle manufacturer or the original equipment manufacturer. Simply using an aftermarket part does not void your warranty. The Magnuson-Moss Warranty Act makes it illegal for companies to void your warranty or deny coverage under the warranty simply because you used an aftermarket part. Still, if it turns out that the aftermarket part was itself defective or wasn't installed correctly, and it causes damage to another part that is covered under the warranty, the manufacturer or dealer has the right to deny coverage for that part and charge you for any repairs. The FTC says the manufacturer or dealer must show that the aftermarket equipment caused the need for repairs before denying warranty coverage."

Note that the above applies to both fluids and to things like headers. But, for fluids, to ensure you are eligible for AMSOIL's Corporate Warranty, you need to follow their recommendations which parrot GMs (e.g. using an oil meeting GM4178M).
Here is the full FCC article:
FTC Consumer Alert