Oil change interval/type
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Cargo Master
Joined: Dec 2007
Posts: 2,822
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From: Minnesota
Oil change interval/type
I have done some searching and would just like to know what some of you guys run for oils, synthetic or conventional, and what interval you change your oil. I'm not looking for any Amsoil/Royal Purple/Mobil 1 arguments. Just wondering about conventional vs. synthetic and intervals. Currently I go every 2500 to 3000 miles using conventional oil. I've heard synthetic will provide better mileage as well as better protection, but have also heard it's a waste of money! So....just wondering what you guys run! Thanks, and sorry if this has been discussed, I'm just hoping for some current opinions/data. 
Post Fiend
Joined: Feb 2011
Posts: 26,410
Likes: 6
From: Ft. Lauderdale, FL
I'm running motorcraft synthetic blend 5w20 with motorcraft filter on my V10... I also change out every 2500 miles.
Twice a year I run pennzoil 5w 20 with (active cleaning agents) for 500 miles.
This oil is very light in color, almost looks like cooking oil.
Have had 192k miles without any issues or leaks. Engine sounds and feels like day one.
This is also my first car/truck with over 55k miles and the 34th vehicle I've owned.
I have been blessed with this truck!
Twice a year I run pennzoil 5w 20 with (active cleaning agents) for 500 miles.
This oil is very light in color, almost looks like cooking oil.
Have had 192k miles without any issues or leaks. Engine sounds and feels like day one.
This is also my first car/truck with over 55k miles and the 34th vehicle I've owned.
I have been blessed with this truck!
Cargo Master
Joined: Nov 2008
Posts: 2,332
Likes: 2
From: Summit, MS
I have done some searching and would just like to know what some of you guys run for oils, synthetic or conventional, and what interval you change your oil. I'm not looking for any Amsoil/Royal Purple/Mobil 1 arguments. Just wondering about conventional vs. synthetic and intervals. Currently I go every 2500 to 3000 miles using conventional oil. I've heard synthetic will provide better mileage as well as better protection, but have also heard it's a waste of money! So....just wondering what you guys run! Thanks, and sorry if this has been discussed, I'm just hoping for some current opinions/data.
Post Fiend
Joined: Feb 2011
Posts: 26,410
Likes: 6
From: Ft. Lauderdale, FL
I just baby the Ex cause of the miles and small amount of oil it holds.
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Senior User
Joined: Nov 2010
Posts: 450
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I've run Mobil1 in all my vehicles. Not because it's the best synthetic out there, but it is easy to get, goes on sale and I don't feel like I need to push the interval to the max to get my $$ out of it. I would say 2500-3000 miles on synthetic is very often. Unless your engine really shears the oil or your engine has other problems I don't see why you'd need to change that often.(or you drive in extremely severe conditions) I change my oil at 5k miles and a Motocraft filter. All that said, oil is cheap insurance so better to change too often than not enough.
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Senior User
Joined: Feb 2011
Posts: 383
Likes: 1
I have done some searching and would just like to know what some of you guys run for oils, synthetic or conventional, and what interval you change your oil. I'm not looking for any Amsoil/Royal Purple/Mobil 1 arguments. Just wondering about conventional vs. synthetic and intervals. Currently I go every 2500 to 3000 miles using conventional oil. I've heard synthetic will provide better mileage as well as better protection, but have also heard it's a waste of money! So....just wondering what you guys run! Thanks, and sorry if this has been discussed, I'm just hoping for some current opinions/data.
Super Moderator
Joined: May 2004
Posts: 29,380
Likes: 118
From: Central Coast of CA
I have done some searching and would just like to know what some of you guys run for oils, synthetic or conventional, and what interval you change your oil. I'm not looking for any Amsoil/Royal Purple/Mobil 1 arguments. Just wondering about conventional vs. synthetic and intervals. Currently I go every 2500 to 3000 miles using conventional oil. I've heard synthetic will provide better mileage as well as better protection, but have also heard it's a waste of money! So....just wondering what you guys run! Thanks, and sorry if this has been discussed, I'm just hoping for some current opinions/data.
Rep points from me if you do! I'll even add a Scoobie snack!
LOL, not I don't even have to look at your sig! Aint no way yours is a smoker with that statement, LOLOLOL!
I changed the oil in my Lightning the other day and was laughing. I finished the whole job, draining the oil, old filter off, new filter on, with a little over 5 quarts in, in less time than it takes to drain the 4.5 gallons of oil from my PSD's.
I forgot how easy it is to change the oil in a gasser because my two primary vehicles are PSD's.
Stewart
Stewart
Excursion Fleet Manager
Joined: Dec 2009
Posts: 1,791
Likes: 5
From: Green Oak, MI
I used to go every 5k. I've run Mobil 1 in both since new or new to the fleet. I converted both Excursions to Amsoil a couple years ago and the F-450 has been run on it since new. I push it a little longer with the Amsoil because they say so. I use the full synthetic 5W-30 and they say it has a service interval of 25k or one year for normal use and 15k for severe use. I went about 10k on the first time and then went just shy of 15k for the second. I don't think I'm considered severe service, but around 14k it seemed like it was time. So I figured I better listen to the engine instead of going by the Amsoil spec and just go ahead and change it. I think for the Amsoil full syn, 12k is a good range. I don't know if going this long is good or not, but the manufacturer says it'll handle it. I haven't sent out an oil sample though, but I'll admit I did save one from the last oil change.
The Amsoil in the '05 has about 5k on it I think, but if I were to get it out again to drive in the V10 form, I would change it due to age.
The Amsoil in the '05 has about 5k on it I think, but if I were to get it out again to drive in the V10 form, I would change it due to age.
Tuned
Joined: Jul 2007
Posts: 363
Likes: 4
When someone makes a suggestion like this I am quick to remind them of the amount of resources that went into manufacturing these vehicles, and that I am being most ecologically conservative by making the vehicle last as long as possible! I am always amazed at how many miles the average taxi cab driver has on their vehicle, and when I ask them the secret, they always say oil changes... and usually at 2000 to 2500 mile intervals, religiously. I am a smoker (see signature) and I use Shell Rotella T6, and change about every 5000 miles.
More Turbo
Joined: Nov 2011
Posts: 611
Likes: 4
From: Northern NV
I used to go every 5k. I've run Mobil 1 in both since new or new to the fleet. I converted both Excursions to Amsoil a couple years ago and the F-450 has been run on it since new. I push it a little longer with the Amsoil because they say so. I use the full synthetic 5W-30 and they say it has a service interval of 25k or one year for normal use and 15k for severe use. I went about 10k on the first time and then went just shy of 15k for the second. I don't think I'm considered severe service, but around 14k it seemed like it was time. So I figured I better listen to the engine instead of going by the Amsoil spec and just go ahead and change it. I think for the Amsoil full syn, 12k is a good range. I don't know if going this long is good or not, but the manufacturer says it'll handle it. I haven't sent out an oil sample though, but I'll admit I did save one from the last oil change.
The Amsoil in the '05 has about 5k on it I think, but if I were to get it out again to drive in the V10 form, I would change it due to age.
The Amsoil in the '05 has about 5k on it I think, but if I were to get it out again to drive in the V10 form, I would change it due to age.
I use Castrol Syntec in all my "cars" and I change my oil at 5k mile intervals. This is my first Excursion and PSD and I'll be using Shell Rotella T6 5w40. Changes at 5k miles will minimize the chance of oil dilution and maximize the life of the engine.