Hello Hyundai Owners,
Our community have been plagued with bearing failures, …yet some can get 200K, 400K, 1 million miles out of our original engines/transmissions without failures, …even when our engines are on the recall list.
Motor Oil
Almost all motor oils are qualified to API SP, ILSAC GF6A or GF6B, …since April 2021. It is difficult to find non-certified oil. The question is when to change the oil. Majority of drivers fall into the “SEVERE SERVICE” category and required to change oil 3750 miles. Only people who drive 1-2 hours on clear highway at 70 F qualify as normal service and 7500 mile oil changes.
The oils are time limited 6 months to 1 yrs, because the oil additive package breaks down and cannot protect the engine.
Oil Filters
Many low cost aftermarket oil filters are able to meet ISO 4548-12 at 99% efficiency at 30 microns and even 20 microns. I want to share my engineering test data and examination.
What everyone need to know about general engine bearing clearances and contamination size? Please refer to the image.
1). Most engines are designed with bearing clearances 0.0008“ to 0.0012” (20-30 microns).
2). The oil film is 1/2 the bearing clearance, 0.0004” to 0.0006” (10 to 15 microns)
3) To prevent any contamination from contacting the bearing causing wear, oil filter must remove foreign objects greater than 0.0004” or 10 microns.
I purchased after market filter rated at 99% efficiency at 30 microns and 20 microns, these passed ISO 4548-12 “single pass” filter rating. Using “AMAZON” dirt particle sized and a laser particle size analysis device. This is not a fully calibrated test using ASTM or ISO certified dirt.
The aftermarket oil filters performance, “Single Pass”
30 microns. 20 microns. 10 microns. Mean Microns
After Market 30 microns. 99%. 85%. <50%. 9-15 (broad peak)
After Market 20 microns. 99% 99% 65%. 9-11
Hyundai 36000-35504. 99%. 85%. 60%. 9-12
Hyundai 36000-35505. 99%. 98%. 75% (82% 2nd Sample) 7-9
The mean micron is telling me these filters remove most contaminants which can cause wear at maximum clearance of the bearing 0.0006” or 15 microns oil film. These filters effectively halt bearing wear beyond max oil film clearance.
What is the biggest difference? It’s the by-pass valve. Many of the aftermarket oil filters have inexpensive by-pass valves set at 15 psi. Therefore, it will allow dirt to by-pass the filter element when only 15-20 PSI differential occurs. At cold temp., cold start; it only required 30-40% clogging of aftermarket filter to open by-pass valve, or less than 100 grams of dirt.
The Hyundai oil filter have by-pass valves set at nearly 100 psi. The Hyundai filter elements are constructed to handle higher burst pressure without failing.
Some of the aftermarket filters elements collapsed at 50-60 psi when they were clogged with dirt (the by-pass valve was disabled). This is actually within the normal operating pressure of the engine.
What does this all mean?
(From the discovery test results - noncalibrated and beyond ISO4548-12 testing requirement)
i. The aftermarket oil filters will filter most contaminants, …to the high side of the wear limit.
iI. The aftermarket oil filters will by-pass contaminated oils at lower level of filter contamination.
iii. The Hyundai factory oil filter have stronger by-pass valve and filter element, therefore it has higher capacity to filter dirt.
IV. The long term life test data, ie 10,000 to 20,000 miles are done in lab, at STP (Standard Temperature and Pressure. The engine is run continuously for the entire test. This does not represent normal human driving, no one can leave their engine rev-ing at 2,000 RPM for 10,000 to 20,000 miles without turning it off and without encountering cold and hot conditions. Normal human drivers only drive 20-30 miles per round trip and turn off their engines over night.
V. How do we use this data and aftermarket oil filters?
If you use aftermarket filters, change your oil and filter based on SEVERE SERVICE maintenance schedule. Over-loading the oil filter will put it into by-pass mode and circulate contamination which can wear out your engine. This means changing your oil and filter at 3000-4000 miles.
Hyundai factory 36000-35505 (latest oil filter) are very good filter. These filters actually filter below 10 micron at 40-50% (7-8 micron). These filters have stronger filter element construction and stronger by-pass valve, which allow higher contamination capacity before by-pass.
What have I done based on my posts?
I have purchased aftermarket oil filters ISO 4548-12 99% efficiency at 30 micron and 20 micron. This Winter the Hyundai factory oil filter 36000-35505 were in limited supply, in my area. This was the reason I decided to use tested aftermarket filter. The test data tell me I need to continue my SEVERE Service maintenance schedule at 3000-4000 miles oil/filter change.
I will buy bulk Hyundai factory 36000-35505 oil filters in the future. These are much better filter, offering better protection of my engine.
Best Wishes
Our community have been plagued with bearing failures, …yet some can get 200K, 400K, 1 million miles out of our original engines/transmissions without failures, …even when our engines are on the recall list.
Motor Oil
Almost all motor oils are qualified to API SP, ILSAC GF6A or GF6B, …since April 2021. It is difficult to find non-certified oil. The question is when to change the oil. Majority of drivers fall into the “SEVERE SERVICE” category and required to change oil 3750 miles. Only people who drive 1-2 hours on clear highway at 70 F qualify as normal service and 7500 mile oil changes.
The oils are time limited 6 months to 1 yrs, because the oil additive package breaks down and cannot protect the engine.
Oil Filters
Many low cost aftermarket oil filters are able to meet ISO 4548-12 at 99% efficiency at 30 microns and even 20 microns. I want to share my engineering test data and examination.
What everyone need to know about general engine bearing clearances and contamination size? Please refer to the image.
1). Most engines are designed with bearing clearances 0.0008“ to 0.0012” (20-30 microns).
2). The oil film is 1/2 the bearing clearance, 0.0004” to 0.0006” (10 to 15 microns)
3) To prevent any contamination from contacting the bearing causing wear, oil filter must remove foreign objects greater than 0.0004” or 10 microns.
I purchased after market filter rated at 99% efficiency at 30 microns and 20 microns, these passed ISO 4548-12 “single pass” filter rating. Using “AMAZON” dirt particle sized and a laser particle size analysis device. This is not a fully calibrated test using ASTM or ISO certified dirt.
The aftermarket oil filters performance, “Single Pass”
30 microns. 20 microns. 10 microns. Mean Microns
After Market 30 microns. 99%. 85%. <50%. 9-15 (broad peak)
After Market 20 microns. 99% 99% 65%. 9-11
Hyundai 36000-35504. 99%. 85%. 60%. 9-12
Hyundai 36000-35505. 99%. 98%. 75% (82% 2nd Sample) 7-9
The mean micron is telling me these filters remove most contaminants which can cause wear at maximum clearance of the bearing 0.0006” or 15 microns oil film. These filters effectively halt bearing wear beyond max oil film clearance.
What is the biggest difference? It’s the by-pass valve. Many of the aftermarket oil filters have inexpensive by-pass valves set at 15 psi. Therefore, it will allow dirt to by-pass the filter element when only 15-20 PSI differential occurs. At cold temp., cold start; it only required 30-40% clogging of aftermarket filter to open by-pass valve, or less than 100 grams of dirt.
The Hyundai oil filter have by-pass valves set at nearly 100 psi. The Hyundai filter elements are constructed to handle higher burst pressure without failing.
Some of the aftermarket filters elements collapsed at 50-60 psi when they were clogged with dirt (the by-pass valve was disabled). This is actually within the normal operating pressure of the engine.
What does this all mean?
(From the discovery test results - noncalibrated and beyond ISO4548-12 testing requirement)
i. The aftermarket oil filters will filter most contaminants, …to the high side of the wear limit.
iI. The aftermarket oil filters will by-pass contaminated oils at lower level of filter contamination.
iii. The Hyundai factory oil filter have stronger by-pass valve and filter element, therefore it has higher capacity to filter dirt.
IV. The long term life test data, ie 10,000 to 20,000 miles are done in lab, at STP (Standard Temperature and Pressure. The engine is run continuously for the entire test. This does not represent normal human driving, no one can leave their engine rev-ing at 2,000 RPM for 10,000 to 20,000 miles without turning it off and without encountering cold and hot conditions. Normal human drivers only drive 20-30 miles per round trip and turn off their engines over night.
V. How do we use this data and aftermarket oil filters?
If you use aftermarket filters, change your oil and filter based on SEVERE SERVICE maintenance schedule. Over-loading the oil filter will put it into by-pass mode and circulate contamination which can wear out your engine. This means changing your oil and filter at 3000-4000 miles.
Hyundai factory 36000-35505 (latest oil filter) are very good filter. These filters actually filter below 10 micron at 40-50% (7-8 micron). These filters have stronger filter element construction and stronger by-pass valve, which allow higher contamination capacity before by-pass.
What have I done based on my posts?
I have purchased aftermarket oil filters ISO 4548-12 99% efficiency at 30 micron and 20 micron. This Winter the Hyundai factory oil filter 36000-35505 were in limited supply, in my area. This was the reason I decided to use tested aftermarket filter. The test data tell me I need to continue my SEVERE Service maintenance schedule at 3000-4000 miles oil/filter change.
I will buy bulk Hyundai factory 36000-35505 oil filters in the future. These are much better filter, offering better protection of my engine.
Best Wishes
