pouring gasoline engine oil into diesel engine

**jeff** · August 18th, 2007 11:39 AM

puwede ko kaya gamiting alternative yung API CF SAE40(delo silver monograde) kahit na dati kong gamit na oil ay API CF-4 15w40(rimula-x) mahal na kasi ng rimula-x ngayon?

**userfriendly** · August 18th, 2007 05:25 PM

Originally Posted by jeff

puwede ko kaya gamiting alternative yung API CF SAE40(delo silver monograde) kahit na dati kong gamit na oil ay API CF-4 15w40(rimula-x) mahal na kasi ng rimula-x ngayon?

Pwede as long as your car only requires CF rated oil. But a multigrade CF-4 is better than a monograde CF oil. Downgrade yan. My advice is to use a multigrade oil. Kung mahal ang Rimula-X try mo sa Petron or Caltex. Meron din oils ang Total, Castrol etc...

**mbeige** · August 19th, 2007 12:40 AM

When checking oils for specificity to gasoline or diesel engines look for the S or C. The API-Sx rating is like the spark (for sparkplugs) for gasoline engines, while the API-Cx rating is like the compression for diesel engines. Diesel engine oil has soot protection, gasoline engine oils do not. You won't get as much soot protection from the gasoline engine oil but if the weight is similar you should have no problems.

**webmiester** · September 20th, 2007 12:51 AM

I have a cousin who was in the motor oil manufacturing business. He claims that many times there are no physical differences between the diesel and gasoline engine oils.

It makes economical sense though - if you have an oil plant, why not just come up with one production line coming up with a product suitable for both diesel and gasoline engine? The only thing different would be the packaging and marketing.

The fact that an oil product was only tested and certified for gasoline or diesel use, doesnt mean it wont pass the test for the other.

In the same way, many of us here aren't certified to drive in certain countries, but that's because we havent taken their test, not because we won't pass.

**LHV** · September 20th, 2007 01:35 AM

I used to work as a lab analyst in a power plant in Navotas, I check the oils upon delivery, I know a little about engine oils but I'm no expert, Iba kasi additives ng engine oil for diesel engine kesa sa gasoline engines, mas mataas ang TBN ( total base number) ng oil for diesels para makontra yung acidity ng diesel, if you will use a purely gasoline engine oil prone sa corrosion ang internals ng engine mo

**mbeige** · September 20th, 2007 09:59 AM

Originally Posted by webmiester

I have a cousin who was in the motor oil manufacturing business. He claims that many times there are no physical differences between the diesel and gasoline engine oils.

It makes economical sense though - if you have an oil plant, why not just come up with one production line coming up with a product suitable for both diesel and gasoline engine? The only thing different would be the packaging and marketing.

The fact that an oil product was only tested and certified for gasoline or diesel use, doesnt mean it wont pass the test for the other.

In the same way, many of us here aren't certified to drive in certain countries, but that's because we havent taken their test, not because we won't pass.

Well probably nothing that he can see. There is a reason why oils are diesel or gasoline rated.