Thank you very much for choosing JAYTEC auto lubricants!
This is an English edition of "JAYTEC Oil & Fluid Data Book 2010" aimed to provide oil maintenance data for the domestic Japanese models operated outside of Japan.
You may wonder why we emphasized "operated outside of Japan", and what is the difference with the domestic applications?
As a matter of fact, travelling distances in Japan are shorter and driving environments are milder than in most of other countries. Not to mention high quality of fuel and excellent condition of roads, the driving style and attitude towards car maintenance of a Japanese car owner are quite different from those of an average driver from any other country.
According to the statistics, the average distance a passenger vehicle travels in Japan per year, is 8,000 - 10,000 km. The entire service life of a passenger vehicle is said 10-12 years. By the time the vehicle is 10-12 years old, it is usually either exported out of Japan, or recycled. Most of Japanese car owners change engine oil after each 3,000 - 5,000 km regardless of the mileage. It means that by the end of its service life in Japan, an average vehicle has slightly over 100,000 km on the odometer, and is in fairly good technical condition. Thus, there is no need for the Japanese car builders to think about how to protect the car's mechanisms after the vehicle has done 100,000 km, because very often its service life in Japan is over by that time. Excellent condition of roads, mild climate, and in most cases light service also help preserving vehicles in good condition. This explains why OEM oil data books recommend the viscosity of the first oil the vehicle received at the assembly plant regardless of mileage, service condition and driving environment, even for 10 year old vehicles. This also explains the absence of long drain oils, as well as "high mileage" and "high endurance" options in the standard OEM oil lineups - the demand for such products is small, therefore there is no need for the car builders to offer drivers special products covering the “non-standard” applications such as high mileage, severe service, or harsh driving environment, or oil with extended service life.
The standard OEM viscosity recommendations for the domestic market models reflect the recent tendencies of the modern Japanese society, which are "fuel efficiency" and "environment protection". Minimum fuel consumption and eco-friendly characteristics are now the 2 main criteria which a modern vehicle is valued by. Therefore, the recent OEM recommendations are focused more on achieving maximum fuel efficiency and lessening environmental impact, rather than delivering maximum performance.
In our opinion, the OEM recommendations are certainly excellent for new and low mileage vehicles, and maybe even for higher mileage vehicles operated in standard driving environments, but they may not be able to deal with such applications as continuous high rpm operation of a high mileage engine, especially if the situation is aggravated by extreme climate or poor quality fuel.
The Japanese vehicles operated outside of Japan often face harder jobs than the ones they used to in Japan. Firstly, the travelling distances are longer, operation is more extensive, and the service life is much longer. Secondly, the driving environments overseas are usually more demanding and may require additional characteristics and qualities that are rarely required in Japan, such as increased thermal and oxidation stability, increased cleanliness and higher TBN which help to deal with high mileage, severe service applications and poor quality fuel. Besides, many foreign drivers consider performance more important than fuel efficiency and prefer to have a performance reserve in their vehicle, making their choice for the performance-focused wide range oils and long drain oils of standard viscosities, which would not be typical in Japan.
To allow the oversea owners of Japanese cars deal with the "unforeseen by OEM" situations such as high mileage, severe service, extreme climates and performance-focused driving, we have included 1-5 additional options of JAYTEC oil for all vehicles, and winter options for some of the vehicles.
A detailed explanation on how to choose the most appropriate oil for a Japanese vehicle, is provided in the chapter "Guide to Correct Engine Oil Selection".
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The volume data is provided mainly for reference purposes.
The oil volume may be quite different within various editions of the same model depending on the particular package, engine modification, year and month of manufacture, transmission type, shift number, and even manufacturer of oil pan.
The volume data in the chart is based on most recent OEM recommendations. These recommendations however, often tend to be too generalized and may not reflect data for some minor modifications or the “limited edition” versions of the some model.
Besides, as the analysis of the vehicle's performance progressed with the years, Japanese car builders used to change their recommendations and offer slightly different volumes for the same models at different periods of time. This explains why same OEM and industry oil service data books published in different years often offer different volumes for the same model.
To identify the exact volume of oil required for your vehicle, we recommend referring to the owner's manual, or searching for the hints on the body of the vehicle (oil level gauges, caution stickers, etc).
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