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Oil change interval?!?!?
#21
06-09-2012 | 12:53 PM
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From: Ila Georgia
#22
06-14-2012 | 05:14 PM
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hound dog, the earlier 4.7 engines were know to sludge up with infrequent oil changes or use of dino oil and extended oil change intervals. extended meaning following the manuel. have been changing wifes oil in her grand cherokee with the 4.7 with m1 every 5000 miles since new. still going strong with 160000 miles on it. check out some grand cherokee forums and you can read all about the sludge issues.
#23
06-14-2012 | 05:24 PM
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Joined: Jan 2011
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Oil change intervals have been increased from the age of 3kmi to 5-6kmi for EPA ONLY!!!
The governement pushed for cleaner vehicles and least amount of pullution. Extending the oil is one of them.
Also, MANY think that newer oils are better than just 15yrs ago. WRONGO. Oil companies have begun to put SOOOOO many additives in the oil to the point it's actually bad for the oil. The newer oils also have far less Phosphorus/Zinc additive in them because they are mandated by EPA to obide by oil ratings. That is the main ingerdient to reduce friction and wear on moving metal objects, BUT, since it's known to clog up catalytic converters to a degree, they have reduced that amount in oils by over half in the last 15yrs!
If you buy Race oils, they are "offroad" use and have proper levels of Zinc in them to protect against wear. What I do is buy Engine Break in additive by Lucas and pour in a small amount with each oil change to bring back up the levels.
One more thing. These "Fuel Saver" oils are the worse for engine wear. They have even less zinc additive in them causing more friction on metal-metal components and have many more additives that break down the function of the oil.
So, just because your vehicle says 6kmi betwen oil changes, doesn't mean you should go 6kmi. Most oil filter companies say 3-5kmi for oil filter changes. Additives in the oil such as Mobil Extended can cause waxy build-up and hurt viscosity ratings the longer you drive. I never install anything that's "High Mileage" or "extended Intervals". Too many additives.
That is because the machining processes for bearings and engine components are much beter than 15yrs ago. If they changes oil more frequently and we had a higher PPM of Zinc back in the oil, there's no telling howlong these newer engines would actually last...500kmi???
The governement pushed for cleaner vehicles and least amount of pullution. Extending the oil is one of them.
Also, MANY think that newer oils are better than just 15yrs ago. WRONGO. Oil companies have begun to put SOOOOO many additives in the oil to the point it's actually bad for the oil. The newer oils also have far less Phosphorus/Zinc additive in them because they are mandated by EPA to obide by oil ratings. That is the main ingerdient to reduce friction and wear on moving metal objects, BUT, since it's known to clog up catalytic converters to a degree, they have reduced that amount in oils by over half in the last 15yrs!
If you buy Race oils, they are "offroad" use and have proper levels of Zinc in them to protect against wear. What I do is buy Engine Break in additive by Lucas and pour in a small amount with each oil change to bring back up the levels.
One more thing. These "Fuel Saver" oils are the worse for engine wear. They have even less zinc additive in them causing more friction on metal-metal components and have many more additives that break down the function of the oil.
So, just because your vehicle says 6kmi betwen oil changes, doesn't mean you should go 6kmi. Most oil filter companies say 3-5kmi for oil filter changes. Additives in the oil such as Mobil Extended can cause waxy build-up and hurt viscosity ratings the longer you drive. I never install anything that's "High Mileage" or "extended Intervals". Too many additives.
That is because the machining processes for bearings and engine components are much beter than 15yrs ago. If they changes oil more frequently and we had a higher PPM of Zinc back in the oil, there's no telling howlong these newer engines would actually last...500kmi???
#24
06-14-2012 | 05:31 PM
Professional
Joined: Jan 2011
Posts: 226
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This is my first new truck in about 7 years and it has been about 14 years since I have dealt with a gasser. I also understand that oils and manufacturers have surely come a long way with newer technologies. With all that being said, I find it hard to comprehend letting the oil accumulate 8000 miles before a change.
My dealer said 3000 at the purchase but they are also in the service business and would be a bit biased.
Is the high mileage intervals the result of synthetic oils?
My dealer said 3000 at the purchase but they are also in the service business and would be a bit biased.
Is the high mileage intervals the result of synthetic oils?
#25
06-15-2012 | 11:02 AM
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Joined: Aug 2010
Posts: 22
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just a warning, i waited for the change oil light to come on in my truck, and when it finally did, the oil barely touched the dip stick. never again.
Lately, i have been going 15,000 miles between oil changes. I use Bosch distance plus filters and change it out every 5000 miles. i use regular mobil 1 synthetic oil.
Lately, i have been going 15,000 miles between oil changes. I use Bosch distance plus filters and change it out every 5000 miles. i use regular mobil 1 synthetic oil.
#27
06-15-2012 | 11:43 AM
Captain
Joined: Feb 2009
Posts: 563
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From: AZ
just a warning, i waited for the change oil light to come on in my truck, and when it finally did, the oil barely touched the dip stick. never again.
Lately, i have been going 15,000 miles between oil changes. I use Bosch distance plus filters and change it out every 5000 miles. i use regular mobil 1 synthetic oil.
Lately, i have been going 15,000 miles between oil changes. I use Bosch distance plus filters and change it out every 5000 miles. i use regular mobil 1 synthetic oil.
#28
06-15-2012 | 11:53 AM
Record Breaker
Joined: Aug 2009
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From: Ila Georgia
I think to go 15k between oil changes I'd use Moboil 1 EXTENDED what ever. Its has a more robust additve pack for 15,000 mile drains. That and using those high end oil filters that you have been using I'd them 7500miles instead of 5,000. Then on second round which would be 15k then change oil and filter. Just a thought.
#29
06-15-2012 | 12:09 PM
Registered User
Joined: Aug 2010
Posts: 22
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well, live and learn. i don't know what kind of crap oil the dealer put in there but it sure burned it quickly. i only went about 6,500 miles on it. of course, knowing the guy delegated to do the job, he probably didn't put enough in the first place. i just never checked it.
Last edited by mr.coon; 06-15-2012 at 12:22 PM.
#30
06-15-2012 | 12:29 PM
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Joined: Aug 2009
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From: Ila Georgia
Different oil has different flash points. A number of over the counter synthetics such as Mobil 1 or Pennzoil Platinum or Ultimate probably have a much higher flash point then most any dino oil. Dosen't mean that in 6500 miles the oil they put in dosen't protect while in the mileage used(6500) just a lower additive pack,hence difference in price and life/flash point etc. I buy my oil off the internet and have it shipped. Two of my vehicles has Amsoil XL 5w20. The vette gets Mobil 1 just cause its on the oil cap and I might not use Mobil again. Might use Amsoil XL 5w30. My diesels,truck and tractor get Amsoil 15w40 Diesel&Marine grade.
Last edited by hounddogg; 06-15-2012 at 12:36 PM.