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I put a few Mobil 1 API-SP oils into the HTFS/VII calculator. They don't provide HTHS in the PDS, but I can estimate it by adjusting it so that the base-oil viscosity index (BO VI) ~ 135. That said, most API-SP Mobil 1 oils have a reduced VII content and a higher HTFS viscosity...

I want one!!! "hybrid reborn" concept: Gen 5 designed from scratch for a new era of PHEVs 2.0 L engine 220 hp (223 PS) combined power 0–62 mph in 6.7 s 13.6 kWh battery improved battery power (that will hopefully let the defogger operate without ICE unlike in Gen 4) battery mounted under rear...

It looks like the API/ILSAC and ACEA specs have converged in many protection requirements with API SP/RC (ILSAC GF-6) and ACEA-2021. The legacy ACEA categories (A3/B4, A5/B5, C2, C3, C4, and C5) still lack LSPI and timing-chain wear protection and provide inferior valvetrain wear protection than...

Comparing the old and updated PDSs, I noticed that the existing ACEA-C5 Castrol Edge Extended-Performance (EP) 0W-20 SP, without reformulation, is apparently also certified for the new ACEA C6, which along with the new ACEA A7/B7, is the strictest ACEA specification, stricter than ACEA A3/B4...

ILSC GF-7 is about five years away. There will be many, many improvements and changes: a new Noack test changes to low-temperature pumping viscosity (MRV) in SAE J300 less engine deposits less oil oxidation (longer oil-change interval (OCI)) better sludge control stricter LSPI control...

This is my conclusion about the SAE J300 viscosity specification: It is obsolete and does not give the full picture. SAE J300 was updated in the mid-1990s to correct inherent problems associated with it by introducing the HTHS viscosity, which is measure at 150 ℃ and a shear rate of 10⁶ s⁻¹. At...

I came across this presentation by Ford on why they require 1,000–1,200 ppm phosphorus for heavy-duty diesel-engine oils. Presentation by Ford on why they require 1,000–1,200 ppm phosphorus for heavy-duty diesel-engine oils—ASTM Test-Monitoring Center (PDF file)

I just got my first oil change for my 2021 Prius Prime Limited Blue Magnetism the day before yesterday. I always park my car away from all the other cars in the parking lots. This is what I did last night. The car was waxed, with not even a single little scratch. Today, when I opened my garage...

First oil change: Timed it one year after vehicle manufacture date, which is a few weeks before the vehicle purchase date, mileage: 7,370 miles Warmed up the car for 22 miles Little wait time at the dealer—the whole thing less than an hour Long Beach Toyota does a good job with the service TGMO...

Nissan showed that by using a GTL base oil and better AW/EP/FM additives in a SAE 0W-8 oil, they can match the chain wear of a SAE 0W-20 oil and get lower Noack volatility and lower oil consumption than with a SAE 0W-20 while improving the fuel economy by 0.57% over that of a SAE 0W-16. Nissan...

Am I the only one here who dreads the most engine wear when the engine is cold? I am especially paranoid about getting on the freeway with a cold engine. Cold engine seems to be an afterthought for most people here when choosing the oil viscosity. I am at no such ease. I understand that if you...

This is great! I need to watch the whole YouTube video when I get a chance. I love the way the Japanese nod when they are introduced. It's funny though they are dubbed with female voiceovers. 50% thermal efficiency is great, and they have certainly put a lot of effort into this, and it is...

Here are the MSDSs provided by Toyota Japan, including those for TGMO by ExxonMobil and Idemitsu. https://toyota.jp/after_service/car_care/yohin/sds/ You will probably need Google Translate. Enjoy! TGMO 0W-16 SN was GTL, but TGMO 0W-16 SP has been downgraded to petroleum-based Group III...

Dmitry's Garage has a very nice rating of car waxes. https://dmitrysgarage.com/wax-shootout Adam’s Polishes Graphene Ceramic Spray Coating is very impressive.

Toyota 90915-YZZF2 oil filter made in Thailand had been there for about a couple of decades since it superseded 90915-YZZA2. It has just been superseded by 90915-YZZN1. I wonder what is different with 90915-YZZN1. Someone will have to buy one and cut it open...

It's nice to see the Toyota dealers now offering both the TGMO and flagship Mobil 1. Both products are made and distributed by ExxonMobil.

So, it's been one year since my car was manufactured in August 2019, and I took it to a local Toyota dealer today for the yearly oil change with the odometer at 5,851 miles, wearing my mask of course. This would be the first oil change since the factory fill, and it's a courtesy maintenance...

Chevron Phillips explains the superiority of PAO in oxidation tests among its other desired properties in this FAQ. https://www.cpchem.com/what-we-do/solutions/polyalphaolefins/faq Here is an excerpt: Has the quality of Group III base oils achieved equality with PAOs? Group III mineral...

A very nice article on synthetic base stocks. Synthetic lubricant base-stock processes and products by Margaret M. Wu (a), Suzy C. Ho (b), and T. Rig Forbus (c) (a) ExxonMobil Research & Engineering Co, Annandale, NJ 08801 (b) ExxonMobil Chemical Co Synthetic Division, Edison, NJ 08818 (c)...

They bench-tested the oils in a Toyota Prius/Prius Prime 2ZR-FXE engine (firing engine) to measure the fuel-economy improvement. They also dyno-tested the oils in a Nissan Rogue Sport MR20DD engine (motoring engine) running in a real vehicle. "SAE 0W-8 high-moly oil demonstrated 0.5% fuel...