Quote:
Originally Posted by White Bullet
Based on the change in formulation of Mobil 1 it is clear for me that I will change what I use. Has anyone used Valvoline VR1 Racing 10w-30? The Zinc is 1400 (ppm) and Phosphorous 1300 (ppm). I ask about this product as pricing places it a $33.00 for five quarts at Amazon. If it is not good product for our application so be it. Just looking for input in comparison to the other known good products at are available for our motors. Thanks.
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We use the following oils in the shop on ZR-1's. They happen to be the same oils that I use in my own ZR-1.
1- Mobil 1 5W30
2- Mobil 1 10W30
3- Brad Penn 10W30 Partial Synthetic The Green (color) Oil
4- Amsoil 10W 40
5- Valvoline VR-1 10-30
I have used Mobil 1 products since 1976 and continue to use them in the ZR-1 even with the updated formulas.
I have used Brad Penn or at least the old Kendall GT since 1970.
Began using the Brad Penn every other year in my ZR-1 for over 4 years.
Only use Amsoil or VR-1 in the year between Mobil 1 in my car if I don't have Brad Penn around. These changes use oil with the higher Z, P, and ZDDP amounts.
Customers continue to favor or at least request the Mobil 1, followed by Amsoil, and VR-1.
Your choice(s) may vary.
I did however stop adding ZDDP to my oil or to customer cars.
If a customer requests it, I mention the possibility of chemical corrosion, and suggest they avoid it unless they are a chemical engineer and know precisely how much to use.
Again, your oil religion may vary, and I have not colluded with any oil company.
They are all very high quality oils.
Marty
Forgot to mention the Amazon 0-20.
While I would not opt to use it in the ZR-1, I see no reason to avoid it in other newer GM cars that require DEXOS approved formulations.
If it is good enough to earn the DEXOS approval, which would be critical for new car warranty claims, and GM is comfy with it, that kind of suggests it should be good enough to use it.
Although I do not read the Washington Post, I do purchase from Amazon.
M