Steve Goodier
Technology Manager (Americas CVO and Global OEM)
Castrol
(800) 777-1466
Steven is an engineering graduate of Salford university (UK), and has spent his career working with engines of one type or another. After graduation, Steven spent several years working in the...more»»
new ULSD oil compatabilitys
Posted by Donald from Oakland, CA, US on May 23, 2007
Can i safely run the new generation HDEO’s in my gas powered vehicles with catalytic converters without fear of the cat converters plugging up?
I have a mixed fleet of everything from Class 3-8 Diesel trucks (mostly CAT, International And Ford/New Holland power) , Class 3-4 catalytic converter equipped Vehicles (GM & FoMoCo) Also some LPG powered forklifts and manlifts as well as diesel drive off road equipment and im Looking to stock just one oil for all the engines we service.
The latest generation of heavy Duty Engine oils (HDEO) which meet API CJ4 will be the ideal choice for your one lubricant.
They have been substantially boosted in performance from previous lubricants. Some premium products (including castrol Tection Extra and Castrol Hypuron) also meet the top performing API SM gasoline specification, so use in all gasoline vehicles even those with catalytic convertors is possible.
The concern of using older diesel engine oils in LPG engines was around formation of deposits in the higher temperature environment, due to the high ash content. API CJ4 products are low ash, so are suitable for most LPG engine too.
Idling Effect on Engines 1
Posted by John from Houston, TX, US on May 22, 2007
Idling Effect on Engines
Posted by Super from New York, NY, USA on April 6, 2007
How does idling the truck for long periods of time affect the engine?
Where ever possible engine idling should be minimized, as excessive idling can result in dilution of the engine oil with fuel, increased soot generation, and occasionally formation of water condensates. Water and fuel in the engine oil will reduce the effectiveness of the lubricant to lubricate engine parts, and soot will make the oil thick and abrasive. This is on top of the extra amount of gas that is consumed compared with starting and stopping the engine. If heat or cooling of the cab is required consider the use of a stand alone cab heater / cooler.
How does the fuel get to the engine oil?????
whom ever wrote the first part of the answer is very wise.
The fuel gets into the engine oil from various sources, some from leaking fuel pipes, but mainly due to incomplete combustion. Everytime the the fuel injector sprays a small amount of fuel gets onto the cylinder liner wall this is then washed doen into the engine sump pan when the piston sweeps past.
Oil weights
Posted by Harry from Black Creek, GA, US on May 22, 2007
This is out of the line of “trucking” but if you are an “Expert” on oil I want to see if you can answer this question.
This is for oil used in a motorcycle. The Yamaha book calls for 10w30 from 10 - 90F. 20w40 in temp. above 90. I have searched but all I find is 10w40. Is that safe to use or can you blend weights to achieve a 20w40. The engine only holds 3.28 US qts. We are planning a 8000 mile trip so oil changes will be made every 3000 miles.
In theory you could blend the two oils to meet the correct viscosity, but this is not reccommended for two reasons,
1. the oil additives within each oil must be identical and in the oil at the same quanity in order to ensure the performance of the oil is uncompromised this is very unlikely
2. The amount of 10W30 and 20W40 that needs to be added to reach the correct blend would be very dificult to calculate, as the viscosity of a finsished formula is the result of base oil, viscosty modifier and additive pack.
A 10W40 sounds like the perfect viscosty for your motorcycle, as this combines the cold performance benefits (for starting) of the 10W and the hot tempereature performance of the 40.
Although the new API CJ4 product is fully compatible with the older CI4plus specification, it is never recommended to mix oils of differing performance levels, as it could compromise the performance of the product, this is particularly important with these new products as addition of non CJ4 lubricants could affect the exhaust after treatment life of 2007 vehicles.
TBN Number and ULSD
Posted by Alex from portland, ME, US on April 6, 2007
Has the significance of a high TBN number been affected by the introduction of ULSD?
TBN is a measure to determine the engine oils ability to withstand attack from corrosive components (Acids) formed by combustion of the diesel, a higher TBN means better protection from corrosion
There are two types of acids that are formed in the combustion of an engine, sulfuric acid from the sulfur in the fuel and nitric acid from the NOX. ULSD has seen a dramatic reduction of sulfur in the fuel, which should result in reduced sulfuric acid; however EGR rates have increased dramatically which will result in higher nitric acid components. The decrease from ULSD is smaller than the increase from EGR, resulting in TBN being as important now as ever.
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