Those having experience with the HEUI Injection System, you know that stiction is an issue (especially in a 6.0) that can be aggravating.
With my 03 6.0, I've had a minor stiction issue off and on for a while. Normally when it's colder outside (like in the 30's F and below) on a cold engine. Two winters ago, I was still running Motorcraft 15w-40 Conventional Oil, and if I didn't plug the truck in, in these temperatures it just wouldn't start. I switched to Chevron Delo 5w-40 Full Synthetic Oil, and this helped the cold start and stiction, wasn't perfect, but much better.
Now, to this winter, still using Delo, I've had the truck start in the low teens without being plugged in, but it was NOT happy about it, clatter, chug, knock, but where there was a bit of heat in the heads, it would smooth out.
Two weeks ago, I was due for an oil change. In talking to a couple of fellas, one who was an engineer for Navistar on the 6.0 had recommended Rev-X. It works well, and will help with stiction. So I bought 4 gallons of oil, a Motorcraft oil filter, and 2 bottled (8 ounces total, recommended amount for this size engine) and changed the oil.
I've now put a couple hundred miles on this change.... and much to my surprise, the Rev-X WORKED!!!
The ultimate test was this morning. It got to 20 F overnight, and I purposely did not plug the truck in. I know how it "normally" acts in this weather, and figured it would be a good test.
Turned on the key, waited for the WTS, hit the key and it fired right up. No miss, no knock, no smoke..... started like it was 70 degrees out. Let it idle for just a minute or two and eased out of the driveway, and when I would normally have a rough running, low power condition, not this morning..... it ran well and didn't miss a beat..... and this is on Factory 162,000 mile injectors........
I have no connection to Rev-X, just sharing my experience...... so it is something for you to think about..... I am not a big "additive because it's supposed to work" kind of person.... but seeing the difference myself proved to me this stuff works!!!!!
@79jasper @Kevin 007 @DaveBen
With my 03 6.0, I've had a minor stiction issue off and on for a while. Normally when it's colder outside (like in the 30's F and below) on a cold engine. Two winters ago, I was still running Motorcraft 15w-40 Conventional Oil, and if I didn't plug the truck in, in these temperatures it just wouldn't start. I switched to Chevron Delo 5w-40 Full Synthetic Oil, and this helped the cold start and stiction, wasn't perfect, but much better.
Now, to this winter, still using Delo, I've had the truck start in the low teens without being plugged in, but it was NOT happy about it, clatter, chug, knock, but where there was a bit of heat in the heads, it would smooth out.
Two weeks ago, I was due for an oil change. In talking to a couple of fellas, one who was an engineer for Navistar on the 6.0 had recommended Rev-X. It works well, and will help with stiction. So I bought 4 gallons of oil, a Motorcraft oil filter, and 2 bottled (8 ounces total, recommended amount for this size engine) and changed the oil.
I've now put a couple hundred miles on this change.... and much to my surprise, the Rev-X WORKED!!!
The ultimate test was this morning. It got to 20 F overnight, and I purposely did not plug the truck in. I know how it "normally" acts in this weather, and figured it would be a good test.
Turned on the key, waited for the WTS, hit the key and it fired right up. No miss, no knock, no smoke..... started like it was 70 degrees out. Let it idle for just a minute or two and eased out of the driveway, and when I would normally have a rough running, low power condition, not this morning..... it ran well and didn't miss a beat..... and this is on Factory 162,000 mile injectors........
I have no connection to Rev-X, just sharing my experience...... so it is something for you to think about..... I am not a big "additive because it's supposed to work" kind of person.... but seeing the difference myself proved to me this stuff works!!!!!
@79jasper @Kevin 007 @DaveBen