Recent content by bwilson4web

Thanks for the link to the thread. It looks like there are four boron compounds used but I'm still stuck with no metric or knowledge of what is used in the Mobil 1 in my experiment. So I can't tell if my engine had already received the effect of a boron CLS treatment or something else. What I...

Hi, Some of this has me curious: Originally Posted By: MolaKule . . . Potassium Triborate (commercially in the form of [K2O (B2O3)3] . . . can form a rather tenacious coating on the sliding and shearing surfaces of machine parts. . . . In some cases, the borates are in the form of “Overbased”...

Originally Posted By: Massimo_A . . . Summarizing what are meaning the bwilson's study? I can find no evidence that boron CLS reduces engine fuel consumption. I found evidence that particles sized in the 6 micro range have a effect. Temperature effect on oil viscosity losses were observed...

Once again, thank you! Originally Posted By: Gokhan . . . A SAE 5W-30 oil with a fresh-oil HTHS viscosity of 3.0 cP may easily permanently shear to an HTHS viscosity of less than 2.5 cP after a few hundred miles. In the formula above, one needs to use the HTHS viscosity after permanent shear...

Originally Posted By: Gokhan . . . The units for high-temperature, high-shear viscosity is cP, and it's measured at 150 C (high-temperature) and 1,000,000 (10^6) 1/second (high-shear). High-shear means two engine parts sliding against each other with oil flowing between them and the shear rate...

Hi, I'm trying to resolve some of your comments with the R&G measurements of Mobil 1: Originally Posted By: Gokhan . . . (1) HTHS viscosity xW-20 oils have HTHS viscosity of 2.6. xW-30 oils have HTHS viscosity of about 3.0 - 3.1 but 5W-30 oils (especially dino ones) usually permanently shear...

wag123 asked,"insulate the oil pan?" The thermostat has a temperature controlled valve and that temperature plateau is needed for my engine fuel consumption tests at idle. It is a question of temperature control, not just heat retention. BTW, I've seen photos of some of our Japanese friends who...

Originally Posted By: Gokhan . . . The thing about trying the decrease the high-temperature, high-shear (HTHS) viscosity by increasing engine-block temperature is that it will decrease the lives of the various parts in your engine and chances are that it will affect more the kinematic viscosity...

Originally Posted By: TheTanSedan Glad this was turned into a thread over here (I found it on www.ecomodder.com), as the overlap in interest should be large. What I'm seeing are different communities whose interests overlap. I love Ecomodder because of their devotion to the scientific method...

Originally Posted By: Gokhan Bob, regarding normal operating temperature, I don't think it will help you to replace the 82 C thermostat with 88 C to get better MPG but it will do a lot of harm to your engine. I know you are thinking about Carnot engine, . . . Not really, it has to do with the...

Hi Jim, Originally Posted By: Jim Allen . . . My initial question would be how those tiny changes in MAF readings translate to actual fuel consumption? Unit fuel percentage changes are difficult to detect in ordinary driving. One unexpected stop or a lucky green light can easily change the...

Hi, Sorry, I can't upload the oil test results but you can see them here: I use R&G Labs out of Tampa Florida. For this series, I had them test the virgin, 5W-30, from the same box. All oil changes added 3 quarts and included a fresh oil filter. Bob Wilson

I appreciate the comment and had been running 0W20 before starting this latest test but I've also got a cache of 88C thermostats. Rightt now, my thinking is: perform passive and electrostatic - pan based fine particle trap tests using loose weave fiberglass and carbon fiber layered...

Thank you for your kind words. I have been documenting these experiments at Ecomodder.com, Yahoo Group Prius_Technical_Stuff and MyHybridCar.com. I had visited Bob is the Oil Guy many years in the past and I was impressed with the early work, at least the goals and intent. But a year or so...

Hi, This is just an introduction to a report on boron CLS effects in a 1.5L, NHW11 (2001-03) Prius. It includes a test protocol to measure the engine fuel consumption after making a change in the engine oil lubrication. The protocol is to start the car and shift into "N" a few seconds after...