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Re: From standard oil to Synthetic
[Re: Crizila]
#549486
12/09/09 10:19 PM
12/09/09 10:19 PM
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Joined: Jan 2003
Posts: 25,200
Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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Do what you please but I will change my oil a heck of a lot more frequently than 7500 miles.
 ......  ... 
But THEN there will be a guy that will come-on-here and suggest a oil-change every TWENTY-FIVE-THOUSAND miles .... with a certain brand oil .. that starts with the letter A ..
I agree ... these contaminants are the prob with any type or brand of oils ....and can you imagine how many there are IN the oil after 25k miles ? .. !!
Read my lips  Chryslers recommendation for the 04 X-Fire: Use only Mobil1 Full Synthetic. Change at 7,500 miles. No shorter interval for severe service was listed. 
well good; My van and pick up both read different but I am not going to go out into the -10 weather to get the book out to get the book and post a exerp.
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Re: From standard oil to Synthetic
[Re: MoparforLife]
#549487
12/09/09 10:56 PM
12/09/09 10:56 PM
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Joined: Aug 2005
Posts: 697
Central IL
70Sbird
mopar
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mopar
Joined: Aug 2005
Posts: 697
Central IL
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I use Mobil one in all my vehicles, except my daughters 10 year old VW and the wifes mini van. My daily driver is a 99 Ram 1500 2WD with a 5.2L, the cost difference between regular and synthetic is only about $12 to $15, I use Mopar (Wix) filters and change every 5,000 miles. So far so good, Its probably overkill but what the He11 I plan on driving it for at least 20 more years Scott 
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Re: From standard oil to Synthetic
[Re: Crizila]
#549489
12/09/09 11:20 PM
12/09/09 11:20 PM
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Joined: Jan 2003
Posts: 25,200
Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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Quote:
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Do what you please but I will change my oil a heck of a lot more frequently than 7500 miles.
Read my lips Chryslers recommendation for the 04 X-Fire: Use only Mobil1 Full Synthetic. Change at 7,500 miles. No shorter interval for severe service was listed.
7500 will be the maximum and whether written or not it is under near ideal conditions. But what every ou beleive. I can't beleive the way people will spend lots of $$$ on rides and scrimp on the oil change intervals to save a buck. 
This is from a 05 Town and Country. my trucks read the same.
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Re: From standard oil to Synthetic
[Re: Crizila]
#549492
12/10/09 06:40 PM
12/10/09 06:40 PM
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Joined: Jan 2003
Posts: 1,883
Northern OH
rapom
top fuel
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top fuel
Joined: Jan 2003
Posts: 1,883
Northern OH
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Just to defend the Amsoil guy. Amsoil only recommends the 25,000 mile change only if you have a bypass oil filter system installed which filters down to 2 microns.(You still use your regular oil filter). I believe its plumbed off the oil sender port. And works by filtering your oil slowly. Might take 20mins to filter all your engine oil where your regular oil filter will filter it many more times in 20 mins.
I'm not an Amsoil user in newer vehicles. Engines nowdays for the most part outlast the cars. Syn oil works the best in crude, high HP, Severe Condition, Engines. (Harley's, Drag Racing, Tractor pulling, etc...(Cold Temps.) I didn't notice any temp. reduction in my Jeep Cherokee 4.0 But in my 600HP Street driven Camaro there was a 15 degree drop. I also will be putting Syn. in my 493 stroker when I get my Coronet done.
In my daily drivers, I just run Walmart API 10W-30 and a quart of Marvel Mystey OIl in the winter. 1/2 Qt. in Summer.
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Re: From standard oil to Synthetic
[Re: Crizila]
#549493
12/10/09 07:30 PM
12/10/09 07:30 PM
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Joined: Jan 2003
Posts: 25,200
Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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Who cares what some CYA stuff says? I would trust an oil sample analysis before that any day. Why waste the money on more oil if I know that a sample every few changes will tell me more than anything?
Did lots of oil sampling ( especially on high end equipment or stuff that was running in severe invironments like street sweepers, etc. )when I was running a government fleet. Basically, found that we were changing oil more frequently than need be on almost everything - based on the sample results. Actually, we found that by replenishing the additive package ( boosting the TBN # ) in the oil and changing the oil filter we could go for double and tripple what was recommended on change intervals. Initially I took the same approach as many on this thread - oil is cheap, why take a chance. But oil isn't cheap when you are using synthetic oil or your change involves large quantities ( 10 - 20 quarts ). Also, engine ( and oil ) improvements over the years have greatly lowered the oil contamination issues that were so prevalent in the 60's and 70's. I still follow the OEM recommendations for oil change intervals, but I can tell you from experience that most people ( including myself ) change oil more frequently than need be. Hard to cut loose that security blanket. 
Much rather spend a couple a bucks extra and change more often than not often enough.
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Re: From standard oil to Synthetic
[Re: Crizila]
#549494
12/10/09 07:59 PM
12/10/09 07:59 PM
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Joined: Aug 2006
Posts: 247
DuPont, Washington
DZJim
enthusiast
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enthusiast
Joined: Aug 2006
Posts: 247
DuPont, Washington
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I'm thinking of changing from standard oil to Synthetic in my '05 300. What's the pros and cons (if any).
Thanks
Cons: expense. Pros: better low temperature characteristics i.e. less viscous at low temperatures thus flows more readily and reaches the places that need oil sooner during cold starts.
For most people most places most of the time, the pros don't justify the con, but if you're wealthy,  no matter...my $0.02
Good point on the $, but there are so many pros besides what you listed ( including extended drain intervals ), I still think its the way to go for anything performance oriented. Every year more and more new cars are coming with full Synthetic oil. I wouldn't race without it. I own an 04 X-fire. It takes full synthetic Mobile 1 - big $$$ oil, but the recommended drain interval is 7500 miles - thats 2 1/2 times the "national average". That pits the $ back in the ball park.
Hmmm...which auto manufacturer recommends extended drain intervals for synthetic vs conventional motor oil? Which major oil company (not Amsoil Lucas and the like) recommends extended drain intervals? In fact which major oil company recommends different drain intervals from the car manufacturers' recommendations, based on synthetic vs conventional oils?
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Re: From standard oil to Synthetic
[Re: SomeCarGuy]
#549496
12/10/09 09:31 PM
12/10/09 09:31 PM
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Joined: Jan 2003
Posts: 25,200
Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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Quote:
And yes, syn oil is capable of running a long damn time. Send off a sample and see what a professional will tell you.
Regular dino lasts a long time to. It isn't the oil wearing out that is the problem but the contaminants that accumulat in it whether it is dino or synthetic makes no difference.
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Re: From standard oil to Synthetic
[Re: SomeCarGuy]
#549498
12/11/09 11:04 AM
12/11/09 11:04 AM
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Joined: Oct 2003
Posts: 7,506
Az
Crizila
master
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master
Joined: Oct 2003
Posts: 7,506
Az
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The utilization of oil sampling is really for fleet operations and although it is a tool for setting oil change intervals, It's main purpose is proactive maintenance / repair and failure analysis. You need a history of reports so you can do a trend analysis on things like bearing / ring wear, air filter leakage and change interval, coolant leakage / blown head gasket, Blower seal leakage, etc. It can get expensive and it takes some talent to be able to read them and make the correct diagnosis from the report. Lots of info and the info you get can vary depending on the engine you are pulling the sample from - IE = blown or normally asperated, cast iron rings or molly rings, etc. It can be a cost effective too for big fleets that have vehicles with very expensive motors in them. My point is that it is really not for us kinda guys. Getting back to the original question, a full synthetic based oil ( and even a blend ) is better than a pure petrolium based oil - IMO  .
Fastest 300
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Re: From standard oil to Synthetic
[Re: Crizila]
#549503
12/11/09 07:37 PM
12/11/09 07:37 PM
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Joined: Apr 2008
Posts: 1,285
Pacific NW USA
CompSyn
pro stock
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pro stock
Joined: Apr 2008
Posts: 1,285
Pacific NW USA
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Summery: Synthetic motor oil does not break down like conventional motor oil and when kept clean by efficient filtration, can last considerably longer than oils/filters NOT designed for that type of use. When extending oil changes past 3,000-miles, the accumulation of contaminates in the oil could be problematic if you’re using an oil filter NOT designed for that type of use. There ARE regular spin-on type oil filters available that can filter motor oil efficiently for extended periods of time without loading up and becoming plugged. Click HERE for a real world independent oil filter comparison. While some continue to condemn the practice of extended oil changes, there are others successfully doing extended oil changes and have independent laboratory analysis to show their motor oil, oil filter and air filter combination makes an extended oil change possible. You also have proof in the independent laboratory analysis as shown below: 20,000 Mile Oil Change, 2004 Ford Crown Victoria - link18,200 Mile Oil Change – 2006 Subaru Outback – link 15,708 Mile Oil Change, 2004 Toyota Sequoia - link30,624 Mile Oil Change, 2003 Honda S2000 – link See also, The 3,000-mile Oil Change MYTH - link 
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Re: From standard oil to Synthetic
[Re: CompSyn]
#549505
12/11/09 08:46 PM
12/11/09 08:46 PM
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Joined: Jan 2003
Posts: 25,200
Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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Quote:
Summery: Synthetic motor oil does not break down like conventional motor oil and when kept clean by efficient filtration, can last considerably longer than oils/filters NOT designed for that type of use.
When extending oil changes past 3,000-miles, the accumulation of contaminates in the oil could be problematic if you’re using an oil filter NOT designed for that type of use. There ARE regular spin-on type oil filters available that can filter motor oil efficiently for extended periods of time without loading up and becoming plugged.
Click HERE for a real world independent oil filter comparison.
While some continue to condemn the practice of extended oil changes, there are others successfully doing extended oil changes and have independent laboratory analysis to show their motor oil, oil filter and air filter combination makes an extended oil change possible.
You also have proof in the independent laboratory analysis as shown below:
20,000 Mile Oil Change, 2004 Ford Crown Victoria - link
18,200 Mile Oil Change – 2006 Subaru Outback – link
15,708 Mile Oil Change, 2004 Toyota Sequoia - link
30,624 Mile Oil Change, 2003 Honda S2000 – link
See also, The 3,000-mile Oil Change MYTH - link
Still maintain why scrimp - oil is probably the cheapest thing that you put in your car. If doubling your maintenance schedule will make or break you you have a problem.
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