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14:22:56 - 04/19/2024
V6 Dakotas
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Matt
Dodge Dakota
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11/06/2003
16:31:04
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 Subject: switching to synthetic
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On my next oil change I'm going to switch over to a synthetic oil. Probably Mobil 1, as I don't think q-lube stocks amsoil. My question is when switching over, do i need to change the oil again after a few thousand miles to get rid of the residual non-syntheitc oil still in the system, or should I not worry about it until the next shedualed change? My current engine has 70k miles on it using standard oil. Is switching now a good idea? I've heard of older engines burning syntheic oils and not others because of the wear on the seals.
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Budysr
Dodge Dakota
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11/06/2003
20:53:06
| RE: switching to synthetic
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Not sure about your question, but you could find a local shop the uses the BG engine flush chemicals. I'm gonna have this done to my '93 soon as it has a ton of sludge built up inside due to the previous owners not changing the oil enough. Costs about a hundred bucks and it'll get alot of the old residue/crap outta there ---then you can start with the synthetic oil...
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AmsoilSponsor
DakotaEnthusiast
11/06/2003
21:28:33
|  Amsoil, switching to synthetic, XL-7500, Auto-Rx
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Matt,
You asked many questions. I'll answer them.
For convenience, Mobil1 is a fine oil.
Many "Quickie-Lubes" are now carrying Amsoil XL-7500 Motor Oil (API and rated for changes at 7500 miles or six months).
AMSOIL XL-7500 Synthetic Motor Oils are specially formulated to provide outstanding wear protection, power, fuel economy and performance for 7,500 miles or six months of service. With AMSOIL XL-7500 Synthetic Motor Oils, motorists driving 15,000 miles a year need only change their oil twice annually. AMSOIL XL-7500 Synthetic Motor Oils offer a high degree of convenience and savings through their ability to perform and protect engines for extended periods.
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Detergents in Synthetic Oils
Q. I sometimes hear "Synthetic oils contain detergents that can make the oil seals leak in older vehicles."
Is this really an issue?
How old would a vehicle have to be to not use synthetics?
A. Synthetic lubricants do have an inherent detergency that cleans and removes conventional motor oil deposits left over in an engine. However, motor oils are designed to help swell seals slightly to prevent leakage. The only time you would observe seal leakage is if the seals are already damaged or showing signs of leakage around them. As long as the vehicle has been well maintained, and in good mechanical condition, it can be switched to a synthetic lubricant at any mileage.
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Matt and Budysr,
Most newer and low mileage vehicles can switch from dino to synthetic at any time without a flush. If you have a higher mileage vehicle I would recommend an engine flush.
Amsoil has an Engine Flush, but I am posting here to PERHAPS offer you an alternative. I have never used this product, but know many guys that have in older engines. It's name is Auto-Rx, (and no - I do not sell this product).
This product that should be considered no matter what oil or engine used (even though some Amsoil Clients have used it with great success, and Auto-Rx's website states you should use it with dino). Again, the product name is Auto-Rx. It is vegetable based and I've been told that it does not affect chemistry or viscosity at all.
It is NOT an Additive but a engine cleaner that (I've been told) really works. It has a residual effect because it cleans the rings and valve seats and valve guide seals so well. Lasts 10000 miles or so in a gasoline engine.
Should you be concerned about seals? I've been told this stuff will simply clean the abrasive deposits that keep the seal from functioning normally. I've also talked to guys that have run tests and they say it doesn't damage anything.
I know another guy that told me he used it in an older engine with a noticable oil pan gasket leak and it almost stopped the leakage after 500 miles. He also stated that it also helped his noisy lifters and cleaned off baked on varnish.
Again, this is not a recommendation, just looking to offer a "safe" alternative for Dakota owners that would prefer to flush their engines prior to switching.
You can check out their website at www.auto-rx.com
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Steven Roark , Amsoil Dealer , Proud Sponsor of www.DodgeDakotas.com
AMSOIL Synthetic Motor Oils, Lubricants, Filtration, and Truck Care Products
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Robert
Dodge Dakota
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11/07/2003
05:42:14
| RE: switching to synthetic
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Matt, take off the fill cap and take a look in there for heavy sludge, if it looks o.k., do not worry about flushing the engine. If your concerned, change the oil filter only after about 1k miles. Mobil 1 and conventional oils are compatible. The leak question has been lingering for about 20 years now when Mobil 1 was in a metal can. They did not add a seal expander in the original formula and that caused leaks. I used it in a 86 4 banger Mustang that went 186K miles... until the rest of the car wore out. The engine could have used a valve job, but was otherwise fine.
I have been using Mobil 1 since 1986 in all my vehicles. I use the "old" 5w-30 oil from my Dakota in my 73 C-10 truck with about 150k miles in it. It has worn out valve seals and burns oil anyway. Strangely enough, the rear main on the chevy quit leaking when I started doing this several years ago. Also, when I peer down the oil fill cap the rockers and springs look clean.
By the way, switching to M1 5w-30, Bosch platinum spark plugs and a K&N filter increased my average mileage from about 18.5 to 20.2 on my 02 3.9.
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