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The RX8 was a great design but flawed motor. An Idea on Improving.

Solving the Utterly Useless Fuel Economy Issue in the Mazda RX8

An interesting blog & article on an amazing body and suspension. I’d own one now if I had the plan to make improvements. Perhaps one day..  Here are some clips from the post and the link so enjoy:

35 MPG RX8 by Paul Lamar

This is a method of downsizing the rotary engine for highway cruising. Right now the RX8 engine is running at about 3250 RPM at 65 MPH and getting 25 MPG. My guess it is using about 30 HP to go 65 MPH. That would be a fuel burn of around 2.6 gallons an hour or 15.6 pounds per hour or a BSFC of around .52. BSFC is defined as the number of pounds of fuel burned for every HP generated in one hour. Here is a very old BSFC map from a NSU Wankel rotary engine. No doubt the RX8 engine BSFC is considerable improved over this engine never the less the basic principles still apply. I don’t have a corresponding map for the RX8 engine in case you were wondering.

A turbo compound rotary could achieve a BSFC of about .38. Turbo compound engines use small turbines extracting HP from the 50% waste energy in a gallon of gas and feeding it back into the output shaft. A well known technology from the 1950’s used in airliner piston engines. One of the problems with these A/C engines was the failure of an exhaust valve would take out the turbine. Needless to say the rotary has no exhaust valves. The 8 HP turbine would be geared down by at least ten to one. Working backwards a BSFC of .38 would be a fuel burn for 30 HP of 11.4 pounds per hour or 1.9 gallons per hour or a MPG of 34.2 MPG at 65 MPH.

Article Link 

 

Ford EcoBoost Challenge – AMSOIL Only Oil Choice

Ford EcoBoost Engines – Turbocharged, High Heat Efficiency needs a 100% Synthetic

In a previous Facebook post on the Sioux Falls page, I mentioned the merits of the 1.0 3-cyl EcoBoost engine but there are several more popular and practical versions in the other vehicles Ford offers. All of these are the most impressive works ever developed by Ford. The overall design of the powerful six’s with the excellent flow of the internal exhaust manifolds to turbo (low inertia twin units) make engine warm-up fast while achieving the most power per cubic inch ever known. There are challenges however making our AMSOIL Signature Series a must for long life and low maintenance.

There are blends and “fully” synthetic products recommended by Ford but with AMSOIL you know you get a TRUE 100% synthetic which can stand up to the heat (beyond what this engine can generate actually) for any amount of time while resisting formation of deposits in your turbo’s lines. AMSOIL leads the industry with the lowest volatility thus less chance for oil vapors being drawn into combustion via PCV and what does get drawn in has less of a chance to leave deposits on the scorching hot intake valves. Also should the driver fail to change oil at the proper recommended interval, AMSOIL has you covered!!

Ford has positioned a “specially developed” version of Castrol called Magnatech but after examining the overall merits it still doesn’t address long term deposits. Castrol doesn’t make any claims to be a true 100% synthetic (They use the term Fully Synthetic which is common for Group IIIs) nor are there any viscosity retention tests. As a AMSOIL customer first and a dealer 2nd, I trust AMSOIL even more hearing from those who work in the windpower industry that AMSOIL has revolutionized their return on investment and all the severe issues with the Castrol product. According to them, AMSOIL provides the only lubricant to solve a serious viscosity retention issue which others have not. This method of solving problems over stockholder profits allows their products to be years ahead in technology and performance. The Signature Series addresses these issues with the EcoBoost even years before there was a need.

Ford EcoBoost

No warranty issues with the Signatures Series as long as you use the proper viscosity. But should anything happen AMSOIL backs their products 100% with their own guarantee and complete satisfaction. No other lubricant company comes close to this type of protection..
Lastly The #1 reason to use AMSOIL’s Signature Series (5W-30, 5W-20 or 0W-20 per your owners manual) is simply for the performance!! There is a difference. It’s in the base stocks and additive packages and it’s constantly being verified and improved. A difference you can feel and an additional load off of the internal parts at all temperatures under all loads. And many synthetic do leave deposits. Not Signature Series. It’s not a Group III base. If a OEM had a duplicate product it would have to be generally around $15 retail per quart to satisfy typical markups needed.

 

Sioux Falls Ford owners – We want to be your oil for max performance in these exceptional engines! Don’t settle for dealership…

Posted by Amsoil – Synthetic Warehouse Sioux Falls – Independent Dealer on Saturday, February 20, 2016

With the EcoBoost and other engines utilizing the gasoline direct injection there’s an additional issue with the intake side of the intake valves concerning cleanliness. As fuel is sprayed directly into the quench area, it bypasses the whole intake manifold and top side of the intake valves thus allowing debris and varnish from the combination of intake dirt and oil vapor from PCV. Ford mechanics have said Ford is working on a solution to this problem but have yet to publish anything on the matter. They warn to not try to spray or apply anything under warranty so we will update this blog when the time comes.
In the mean time only AMSOIL Signature Series 5W-30, 5W-20 and 0W-20 has the lowest volatilityin the industry. In fact AMSOIL was the first company to use the NOACK Volatility test as a standard to go by. This guarantees the lowest amount of crankcase oil vapor being sucked back through the intake system through PCV.

The authorized mechanic referenced in the video below suggests the use of a catch-can once warranty is complete. It will prevent more buildup on these sensitive parts.

Thank you again for reading my AMSOIL blog. I’m Ches Cain with The Synthetic Warehouse. Hope you visit the Sioux Falls store and try out all the products in all of your equipment. Ask for a catalog and be sure to get a coffee mug when you buy a case of any oil!!

 

The Only Oil Choice for Turbos – Signature Series

Visit us for all your oil needs:
Synthetic Warehouse Sioux Falls
4610 W. 12th St.  (12th & G right next to Wendy’s)

New Challenges for Lubricants

The increased slate of issues lubricants have to meet (or will have to) as technologies to lower emissions are required, place the burden of expertise on to the customer. AMSOIL wants to ensure the customer these issues have been addressed long before the standard reaches the marketplace. Other problems which occur in new vehicles such as design flaws or specific engine wear/sludging issues are also addressed by AMSOIL’s technical staff swiftly. The superiority of their knowledge and resources available can result in an immediate solution giving drivers more time in between these known problems requiring repair or often solving the problem entirely in both engine and transmission.

Turbocharger Issues

The industry trend toward smaller engines that deliver increased power and fuel efficiency has been well documented. The AMSOIL Newsstand contains several articles about the key technologies that enable today’s advanced engines – turbochargers, gasoline direct injection (GDI) and variable valve timing (VVT). These articles have mainly addressed how these technologies affect motor oil.

In short, they’re brutal on oil. It’s one of the reasons more automakers are installing synthetics at the factory.

Fuel dilution can be a problem

To summarize, GDI technology locates the fuel injectors directly in the cylinder (hence the name), as opposed to the manifold. This arrangement allows for greater control over injection, allowing engineers to fine-tune engines for greater efficiency and power. A side-effect of this process, however, is fuel contaminating the oil. As fuel is sprayed into the combustion chamber, it can wash past the rings and down the cylinder walls, into the oil sump. Ford* has seen the issue frequently enough to release a technical service bulletin (14-0040) titled “Fuel Odor From Engine Oil and/or Engine Oil Level Overfull” to address F-150 trucks equipped with the 3.5L Ecoboost* engine. Fuel dilution varies by engine type and driving conditions, with some vehicles showing no issues.

There are two main side-effects of fuel in the oil. First, fuel thins the oil, sometimes reducing the viscosity below the specified grade. If not accounted for in the design of the engine, this can affect wear rates and have an effect on systems that use the oil to function, like VVT.

Second, significant fuel contamination increases the rate of oil degradation. For these reasons, oil analysis labs typically condemn oil samples when the fuel content is greater than 5 percent.

Low-quality oils no match for turbos

Many GDI engines are turbocharged (TGDI). Turbos push more air into the combustion chamber, and tuning for efficiency can improve fuel economy, especially when combined with other technologies, such as direct injection. Operating at up to 150,000 rpm on exhaust gases that can exceed 1,000°F, turbos create extreme conditions that can cause low-quality oils to quickly break down, creating deposits and shortening the life of the oil. By 2020, industry experts predict nearly every new vehicle sold will come equipped with GDI technology, and the vast majority will be turbocharged.

Many motorists – and even more in the future – probably see only the tremendous benefits of improved power and fuel economy from their TGDI vehicles. Most don’t realize the toll modern engines take on motor oil.

Like most vehicle manufacturers, AMSOIL has long recommended different service intervals based on “normal” or “severe” driving conditions. Turbocharged vehicles are automatically included in the severe service category due to the extreme heat they generate. To ensure customers have the information they need to properly maintain their vehicles, a notice will soon be added to the AMSOIL Product Guides at www.amsoil.com that reminds owners of turbocharged vehicles to follow the severe-service recommendation. That means customers using Signature Series Synthetic Motor Oil in TGDI engines can extend drain intervals up to 15,000 miles/700 hours/12 months, whichever comes first, and should only extend oil changes beyond that with the guidance of oil analysis.

AMSOIL synthetic motor oil delivers superior protection

As proven in numerous tests, AMSOIL synthetic motor oils deliver outstanding protection for these challenging engines. For example, the TEOST Test (see graph) determines an oil’s tendency to form deposits at high temperatures and is a good indicator of turbocharger protection. In the test, Signature Series 5W-30 Synthetic Motor Oil minimized deposits and easily surpassed API SN requirements. In the extreme heat of the Sequence IIIG Test, Signature Series scored 86 percent better for piston deposits than required by API SN, even after doubling the length of the test.

Oil Deposit tests - Brands compared

Here at our Sioux Falls location we get a lot of Subaru WRX and STI owners who know the trouble the run of the mill synthetic causes if it’s not the true PAO base 100% as AMSOIL Signature Series. With AMSOIL Signature or European Series you never have to worry about coking or burnt deposits caused by other so called “fully synthetic” products as long as you follow the severe service oil change interval. AMSOIL is the key to enjoying long life turbocharged performance.

Even in older cars with turbos (Corvair, Chrysler Laser, Mitsubishi 3000GT and so on) can enjoy better performance using our Signature Series.

clogged oil passages on turbocharger unit.

This would never happen with a top quality synthetic motor oil.

Material from turbo oil passages. Volitile non-synthetic oils will do this.

Material extracted from turbo’s oil ports due to inferior motor oil choices.

Turbo inner workings

The above shows how close the oil gets to extreme exhaust temperatures.

AMSOIL - The Only Choice for Turbos

Visit our Sioux Falls location at 4211 South 12th St. Just down the hill from L and across the street form the Hardees stop.

Call us at 800-579-0580

Note – this link opens an awesome Turbo 101 learning page by Honeywell.