Jeep Junkie
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- First Name
- Muhammad
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- #31
Now PUP is also API SQ and ILSAC GF-7Higher levels of calcium seems to be a thing of the past. I do appreciate your post none the less.
Calcium and LSPI
The concern about calcium levels stems from research showing that high concentrations of calcium-based detergents can increase the likelihood of LSPI events. LSPI is an abnormal combustion event that can cause severe engine damage, such as broken pistons.
In response to this issue, the oil industry introduced the API SN Plus and later the current API SP categories. Oils with these ratings manage LSPI by:
- Reducing calcium levels: Typical calcium levels were reduced from 2,000-3,000 parts per million (ppm) to lower levels, often around 1,200 ppm or less.
- Increasing magnesium levels: Magnesium-based detergents are used to replace some of the calcium, as they have little impact on LSPI.
Pennzoil Ultra Platinum Suitability
Modern Pennzoil Ultra Platinum formulations are designed to meet or exceed the latest industry standards, including ILSAC GF-6 and API SP. This means they are inherently formulated to be LSPI-safe for turbocharged engines.
While some older formulations of Pennzoil Ultra Platinum might have had slightly higher calcium levels than regular Pennzoil Platinum (e.g., 1029 ppm vs. 780 ppm in one test), these levels are still within the acceptable range for modern API standards and significantly lower than the levels found to be problematic in older, non-certified oils.
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