Are you sure it didn't get some gas at the last fill up? Sounds just like the symptoms you get with gas. Did the noise occur just after the tank was filled?
I have to disagree on EGR causes black oil, all Diesel engines cause quick black oil due to one thing, high compression ratio, EGR has nothing to do with the oil, every Gas engine made today has EGR, why is there oil not black?
EGR does indeed create INSTANT black oil, non EGR diesels will go a considerable distance before doing it. It happens like right now after an oil change on the '06 truck.
Also the oil from an EGR equipped diesel will stain your hands way worse than its non-EGR counterpart.
It is not unique to our trucks either, my 2003 EGR equipped TDI does the same thing, oil is instantly black after a full service.
My '97 CTD however keeps the oil clean for a fair distance before changing color and even then it is not as black or nasty as my two above mentioned diesels.
Gas engines don't burn the same fuel, you shouldn't compare the EGR properties of a gasoline engine to a diesel. Whole different animal.
Mike.![]()
EGR does indeed create INSTANT black oil, non EGR diesels will go a considerable distance before doing it. It happens like right now after an oil change on the '06 truck.
Also the oil from an EGR equipped diesel will stain your hands way worse than its non-EGR counterpart.
It is not unique to our trucks either, my 2003 EGR equipped TDI does the same thing, oil is instantly black after a full service.
My '97 CTD however keeps the oil clean for a fair distance before changing color and even then it is not as black or nasty as my two above mentioned diesels.
Gas engines don't burn the same fuel, you shouldn't compare the EGR properties of a gasoline engine to a diesel. Whole different animal.
Mike.![]()
Hey igjohnson
So, what did the dealer find with your truck?
My '97 CTD however keeps the oil clean for a fair distance before changing color and even then it is not as black or nasty as my two above mentioned diesels.
lgjohnson, I asked about the same LOUD KNOCKING noise when first started. Sounds like a very distinct hammer against cast iron noise. It come straight out from the front radiator area. Most here said ignore it. It still does it, but goes away once warm. My MPG has gone up to approx 14. 5 and a little above when A/C is off. I found leaving it in 6th gear(auto) all the time gives its best MPG even though I thought it was lugging at 1K-1. 5K rpm's and was using 5th around town. I had buyers remorse myself. Was wondering why I got rid of a good 05'. All in all, I'm happy. If my 5th wheel was lighter, I'd go back in years on a CTD probably to 2000-2002. Just love the noise those years made aside from the fuel issues. ..
Sadly the new diesels are plagued with pollution controls that have taken all the incentive out of them for anyone but a hot shot or farmer etc. mileage empty definitely does not compute.