Gokhan's latest activity

I always open them if they aren't sealed to make sure it looks OK before I buy one. I have seen someone put cheaper ones in a less...

Yes, thicker oil will result in lower fuel economy and not just by 0.1 mpg. You can easily see a 5% difference between HTHS ~ 3.0 cP vs...

2018 Mercedes GLC. Have been running Pennzoil Platinum Euro L SAE 5W-30 for the last three changes or 14k miles. Average fuel...

Do they need a motive? They could do it for fun. Do we know that it's new oil? Someone may have put used oil in it.

Actually, they open the oil-filter boxes a lot more often than the oil bottles. It gets very annoying. Be very careful when you buy an...

That bottle is tampered with. You shouldn't use it. The front label appears to be removed and attached from another bottle, and the...

The credit goes to @Gokhan .

Thank you so much for sharing this information. Your post should be a sticky on here, spreadsheet included :)

Rotella has antifoaming agents. https://rotella.shell.com/en_us/info-hub/how-oil-additives-work.html That said, for motorcycles there...

Probably only anecdotal. API CK-4 and API SP both have the Sequence I–III D892 93.5 °C foaming tests, and the API CK-4 limit on...

Rapid TBN drop will cause lead corrosion. Lead corrosion is not inconsequential, as it results in bearing wear...

I asked them that a while back. Some type of corrosion but could be inconsequential. It's been discussed a lot on here. Tbn drops...

I don't know. It's probably lead corrosion due to a formulation issue. It has a lot of POE, and perhaps that along with an improperly...

If you saw the UOAs for the Red Line High-Performance, you wouldn't want to try it. The Red Line High-Performance is only meant for...

Last but not least, I would like to add that I do not think the formulations have changed, but what ExxonMobil chooses to report or not...