ChatterBank3 mins ago
Engine Oil
is it OK to mix one brand of engine oil with another as long as they are both the same grade?
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No best answer has yet been selected by Lou Knee. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.depends really. it's not good practice but if the engine is quite high mileage and to be polite, not a particularly high tech unit, then the correct quantity is the important thing. obviously it's better to change the oil regularly and try and keep to the same brand. but, if it's the same grade and type then no harm done.