Red55
Gold Member
Just a stupid question but are any of your fluids (ie coolant hydro fluid etc) low? -Ed
If you're talking diesel engine oil - like 15W40 - the answer is no. Relative to viscosity, it's no different than any other engine oil. The main difference is how it suspends contaminates small enough to pass through the filter. That's why diesel engine darkens during use.dan c said:But is it not common for diesel oil to look runny very soon after fresh?
Sorry - too late to edit my mistake. It should have read: "That's why diesel engine oil darkens during use ".greg_g said:That's why diesel engine darkens during use.