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- May 19, 2022
- Messages
- 149
I recently emailed their tech department trying to figure out what’s in this stuff and how long of an interval I should expect to do. They recommended 5-7k miles on a street car. They provided me with 6 elemental analysis’s they’ve done
I had to take screen shots so I apologize for the chopped nature of this
Looks strong
Here is the copypasta of the response:
Thanks for your question!
Our RS 5W-30 is our most advanced automotive engine oil we offer due to its chemistry and additive packs featuring 3x ester fortification (aids in solvency and overall engine performance) as well as other high-end components like robust polymers to help maintain its viscosity throughout its lifecycle and during all operating temperatures, as well as also featuring a high Moly (Molybdenum - friction modifier) concentration in an effort to help reduce wear through friction and increased temperatures.
Being a full synthetic it will be much more resistant to temperature extremes, both hot and cold, and will last much longer and resist degradation due to the molecular uniformity and high ester formulation.
In your case, for a street application, it will last longer than a typical racing application due to lower temperatures and less stress on the motor, but typically we recommend never exceeding an OEM stated service interval just to be safe as the more frequent you change the oil, the better, no matter what application or oil you use, even full synthetic. Though, RS will hold up longer under these circumstances especially if it is not being driven hard consistently. If your oil temperature gets anywhere from 250-300°F, the oil will begin to degrade much quicker. The flash point though is much higher at nearly 450°F so that wouldn't be an issue.
I would say 5,000-7,000 miles is an appropriate service interval for RS in your Fiesta. I do want to warn you though that because of RS's high Phosphorous, Sulfur, and ZDDP content, it is very hard on emissions systems, especially if the car burns any oil at any point. I know you mentioned not caring as much about the high ZDDP content but just know those other elements in higher concentrations can also be detrimental to the emissions system. Also, the TBN number for RS 5W-30 is 7.40 mgKOH/g
I have attached a snapshot of our QC lab data from some of our recent batches of RS 5W-30 for you to look at if you would like to analyze.
Let me know if you have any questions and I'd be happy to help out!
Thank you for choosing Maxima,
I had to take screen shots so I apologize for the chopped nature of this
Looks strong
Here is the copypasta of the response:
Thanks for your question!
Our RS 5W-30 is our most advanced automotive engine oil we offer due to its chemistry and additive packs featuring 3x ester fortification (aids in solvency and overall engine performance) as well as other high-end components like robust polymers to help maintain its viscosity throughout its lifecycle and during all operating temperatures, as well as also featuring a high Moly (Molybdenum - friction modifier) concentration in an effort to help reduce wear through friction and increased temperatures.
Being a full synthetic it will be much more resistant to temperature extremes, both hot and cold, and will last much longer and resist degradation due to the molecular uniformity and high ester formulation.
In your case, for a street application, it will last longer than a typical racing application due to lower temperatures and less stress on the motor, but typically we recommend never exceeding an OEM stated service interval just to be safe as the more frequent you change the oil, the better, no matter what application or oil you use, even full synthetic. Though, RS will hold up longer under these circumstances especially if it is not being driven hard consistently. If your oil temperature gets anywhere from 250-300°F, the oil will begin to degrade much quicker. The flash point though is much higher at nearly 450°F so that wouldn't be an issue.
I would say 5,000-7,000 miles is an appropriate service interval for RS in your Fiesta. I do want to warn you though that because of RS's high Phosphorous, Sulfur, and ZDDP content, it is very hard on emissions systems, especially if the car burns any oil at any point. I know you mentioned not caring as much about the high ZDDP content but just know those other elements in higher concentrations can also be detrimental to the emissions system. Also, the TBN number for RS 5W-30 is 7.40 mgKOH/g
I have attached a snapshot of our QC lab data from some of our recent batches of RS 5W-30 for you to look at if you would like to analyze.
Let me know if you have any questions and I'd be happy to help out!
Thank you for choosing Maxima,
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