Engine flush after injector change?
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Engine flush after injector change?
Had an injector replaced last week and now i think I have fuel in my oil. When I change the oil should I add a bottle of engine flush? Just not sure if that stuff is ok to use because of the injectors?
Thanks.
Kevin
Thanks.
Kevin
Postmaster
Joined: Jan 2008
Posts: 3,174
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From: Kansas City MO
I was actually told that If I wanted to clean my injectors then add a quart of diesel to the oil and run the motor for about 5 minutes at idle only and then drain the oil and change. The only problem was the hpop system would have the fuel in it til the next oil change. But if you figure it, the ratio of fuel in the original 15 quarts, then you change the oil and add 15 quarts of fresh oil. There would not be very much fuel in the oil. But think about it, If you want to clean something, then diesel is an excellent cleaner. Also there is no way of knowing how much fuel was released into the crank(if any). Your concerns are not far fetched. For what it is worth. I have changed injectors and never changed oil any differently than my original maintenance schedule.
Fleet Owner
Joined: Nov 2003
Posts: 27,881
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I agree about the engine flush - not a good idea. Diesel engines always produce some fuel dilution in the oil. Mine runs around 0.5% which I feel is very good. I believe 2% is a national average so if you just drain the oil and replace it w/ fresh oil, you should be OK. It may ease your mind to do an oil analysis to verify you do not have an issue anymore. Also, fuel dilution is higher at start-up and also when idling. This is another reason to avoid extended periods of idling. If you feel you have other sticking injectors, a lot of folks are adding HSS (Hot Shots Secret) and many are liking the results. So far, it is the only "safe" oil additive I have read about.
Fleet Owner
Joined: Nov 2003
Posts: 27,881
Likes: 3,595
Another problem with fuel dilution (picked this up on a thread either here or on the BITOG site - wish I would have bookmarked it):
This how it works on the 6.0L (if you have fuel dilution with a fuel additive in it). That additive is not designed for bearings. So it starts cleaning/wearing off the outer layer quicker. Some diesel Fuel additives can be worse than others. Stick with Diesel Treat 2000 that you are using or FP-60. Normally you will see an increase in copper and lead. Now the other thing that can cause that problem is turbo bearings. High lead and copper are solid indicators. Now these turbo bearings are also affected by fuel additives in the oil. My explanation stinks, but the gist of the problems caused by some fuel additives is solid. There are a couple of big name fuel additives that I will not put in my tank. In many instances, I can look at wear and tell if they are using one of about 5 additives. Not perfect, but very close. As always, I send my UOA to Dyson Analysis for his read to make sure on anything.
As for me, I use Stanadyne - don't know if this is one that is hard on bearings or not. I do regular oil analysis and I watch the fuel dilution closely (as well as the lead and copper) - it can cause premature failure in several areas.
This how it works on the 6.0L (if you have fuel dilution with a fuel additive in it). That additive is not designed for bearings. So it starts cleaning/wearing off the outer layer quicker. Some diesel Fuel additives can be worse than others. Stick with Diesel Treat 2000 that you are using or FP-60. Normally you will see an increase in copper and lead. Now the other thing that can cause that problem is turbo bearings. High lead and copper are solid indicators. Now these turbo bearings are also affected by fuel additives in the oil. My explanation stinks, but the gist of the problems caused by some fuel additives is solid. There are a couple of big name fuel additives that I will not put in my tank. In many instances, I can look at wear and tell if they are using one of about 5 additives. Not perfect, but very close. As always, I send my UOA to Dyson Analysis for his read to make sure on anything.
As for me, I use Stanadyne - don't know if this is one that is hard on bearings or not. I do regular oil analysis and I watch the fuel dilution closely (as well as the lead and copper) - it can cause premature failure in several areas.
