Here is my first oil analysis result. This kit is sent by Pennzoil, special thanks to them & Gena.
Took the sample at 9350 kms (5800 miles) and dumped the oil at 10k kms (6200 miles), OLM showed "-2300" kms (1400 miles) before I changed the oil. MM was 0% at 7700 kms or 4800 miles. I used s2000 oil filter and haven't changed it yet. I replaced the oil with PYB 10W30.
I added 0.3 quarts of PUP 5W20 at 8500 kms (around 5k miles), which I didn't have to, but I just wanted to keep it slightly over the max level. First time I've ever added a "make-up" oil to this car.
70% severe conditions, means rush hour stop&go traffic, short trips, or spirited driving at high rpms
30% highway or easy use. I always keep it under 3k rpms when the engine is cold.
Some people may think that 10k km-6.2k miles OCI is too short with a fully syn oil. However, I already extended it 1400 miles (according to MM), the oil smells fuel and it was really dark black. Even though it is a daily driver, it's a high rpm - high cr engine so I just don't want to take risk extending it too much. It is hard to "guesstimate" without TBN, but seems like 6-6.5k mile OCI is sweet spot with a quality synthetic.
Took the sample at 9350 kms (5800 miles) and dumped the oil at 10k kms (6200 miles), OLM showed "-2300" kms (1400 miles) before I changed the oil. MM was 0% at 7700 kms or 4800 miles. I used s2000 oil filter and haven't changed it yet. I replaced the oil with PYB 10W30.
I added 0.3 quarts of PUP 5W20 at 8500 kms (around 5k miles), which I didn't have to, but I just wanted to keep it slightly over the max level. First time I've ever added a "make-up" oil to this car.
70% severe conditions, means rush hour stop&go traffic, short trips, or spirited driving at high rpms
30% highway or easy use. I always keep it under 3k rpms when the engine is cold.
Some people may think that 10k km-6.2k miles OCI is too short with a fully syn oil. However, I already extended it 1400 miles (according to MM), the oil smells fuel and it was really dark black. Even though it is a daily driver, it's a high rpm - high cr engine so I just don't want to take risk extending it too much. It is hard to "guesstimate" without TBN, but seems like 6-6.5k mile OCI is sweet spot with a quality synthetic.