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2002 vx v6

Promotec

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I had it suggested on this forum by a member that I should use 15w/40 diesel engine oil to help with sludge in engine

whats the general opinion of using diese engine oil in a petrol motor I have read other articles thats discourage the use of a diese engine oil in a petrol motor, any suggestions guys

Regards Chris
 

1991_Vn2nV

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I guess it depends on the oil as well.

If you look at Mobils range, many of the oils are for both diesel and petrol engines (such as the Super S range). They do have diesel specific oils also, but they are for heavy duty applications (i.e. trucks) and would not be using those in my engine.
 

Not_An_Abba_Fan

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Diesel specific oils only have extra detergents and slightly higher film strengths, it won't affect a petrol engine. The other way around may give problems though.

Another thing that I have read about is the use of ATF as an engine flush. Some people say to use straight diesel, but I wouldn't put diesel in my engine.
 
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