Synthetic oil? Is it worth the money? - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 18 (permalink) Old 01-14-2008, 03:41 PM Thread Starter
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Synthetic oil? Is it worth the money?

Hi guys, I would like everybody's opinion on what oil is best to run in these new 6.4's. My plan was to change my oil at 2500 miles at ford with ford motorsport cj-4. My next oil change I was planning at 5,000 miles again with ford cj-4. I was going to do it this way to have two changes to drain any metal from initial break in. At the 10,000 mile mark I was planning on using amsoil synthetic, but It will cost close to $200.00 per change for this oil every 5,000 miles there after which will be about 600 per year for me. If I stick with conventional ford motorsport oil, I'm only looking at $300 per year. I want great protection and long life out of my truck. Either way I am very dedicated to consistant oil changes in my vehicles when they are due. So What are you guys doing in regards to your oil changes and types of oil???

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post #2 of 18 (permalink) Old 01-14-2008, 03:59 PM
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i like good ol Rottela oil (hope i spelled it right). syn oil coast to much and not worth the money. IMO
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post #3 of 18 (permalink) Old 01-14-2008, 09:42 PM
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I run Amsoil 5w-40 second choice would be the mobile delvac-1 but there is nothing wrong with the factory oil. I didn't see any mpg increase the truck might be a little smoother and quieter !
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post #4 of 18 (permalink) Old 01-14-2008, 10:45 PM
 
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Your question is "synthetic oil? is it worth the money?"

In a word.......no.

Even with synthetic you still have to change your filter every 5k. Plus you have to take the oil somewhere and have it analized.

Just stick with regular oil and change it every 5k and you will be fine.

Not sure what is reccomended for the new 6.4, but I've always used good 'ol Rotella T.:Thumbup:
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post #5 of 18 (permalink) Old 01-16-2008, 01:15 AM
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I pay 6.60 for a qt. of Amsoil 3000 series 5w30. With your 16qt. pan it will cost 130 bucks with a filter. Change it a little less often to make up for it. I know a guy who has a 7.3 and has 80 k on his Amsoil. The tests sais it's still good. He uses Amsoil filters too,but not bypass. I crossed paths with many diesel owners who change every 15 k with Amsoil. My biggest reason though for Synthetics is for cold starts in winter.
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post #6 of 18 (permalink) Old 01-16-2008, 08:14 PM
 
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I am using the 5w-40 from AMSoil. I saw about a 1 mpg increase. Also If you use the AMSoil filter you don't have to change for 25k miles or a year whatever is first. It will ending up saving you money for less oil changes per year, if your comfortable with not changing oil every 5k.
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post #7 of 18 (permalink) Old 01-17-2008, 11:47 PM
 
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Synth is worth it. It flows sooner in the cold, and flows, doesn't coke up in the hot! Wally mart has the Mobil 1 Diesel for 22 buck a gal, 4 of those and you are good. I use the Shell Rotella T Synth at 17 bucks a gal from Wally mart. Your choice.
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post #8 of 18 (permalink) Old 01-18-2008, 12:28 AM
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Quote:
Originally Posted by richamato
I am using the 5w-40 from AMSoil. I saw about a 1 mpg increase. Also If you use the AMSoil filter you don't have to change for 25k miles or a year whatever is first. It will ending up saving you money for less oil changes per year, if your comfortable with not changing oil every 5k.
:iagree

We have 22 powerstrokes in our fleet and run amsoil in them. We don't have to change but every 30-40K miles according to the oil tester thing. I just put some amsoil 5W-40 in my truck yesterday and it did feel smoother in the morning and on acceleration.

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post #9 of 18 (permalink) Old 01-18-2008, 12:23 PM
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I have 327,000 miles on my truck, it has had amsoil in it since 2700 miles. I run dual amsoil filters one on block and one bypass. I change my oil maybe every 40,000 miles or as needed. Of course the filters are changed every 10-12k. Yeah its a little expensive but add it up _______for so much oil an done filter_______times a year, then figures you have one big amsoil bill once a year and maybe a couple filters in between.
just my .02

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post #10 of 18 (permalink) Old 01-18-2008, 11:01 PM
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for you guys using amsoil, is it really a better oil? it is about time to change oil in my truck and i am thinking of using amsoil but wanted to get a few comments first. thanks.
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