Hi, trying to find some info on using Heavy diesel oil in a light diesel car. Oil in question is Q8 supertruck ACEA E4/E7 to be used in a 1.9 turbo diesel afla romeo and a 2.0 turbo diesel volvo S40. Reading the spec it might be suited more to the alfa as it has no DPF filter. Any pointers would be much apperiated, i have an endless free supply of Q8 hence the reason of asking.
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