Everyone is entitled to an opinion, however misleading.
Synthetic NEVER breaks down, it is the dirt and contamination that reduce its ability to provide the lubrication an engine requires. The key is keeping it clean. There are a lot of dual-filtration products on the market that keep the product so clean it virtually lasts forever. I have used AmsOil synthetic products for years and can tell you that a true 100% synthetic (such as AmsOil) is far superior than any petroleum based product. I am not trying to sell AmsOil, just state that it beats all the advertised synthetics on the market...by independent labs.
When should you change...after the motor has had time to break in. A new motor must be seasoned, say 8 to 10K miles, then you can change it out. I run synthetic in a Nissan Titan, at the fuel savings alone is worth it. Can't say much for the quality of the truck, but the engine definitely runs smoother with synthetic.
AmsOil now has a 25K filter, and their recommended oil change is 25K, meaning you can go an entire year without changing. The best part is, if you have dual filtration and change yearly, you can get a oil sample kit for around $20
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send it in to an independent lab and they come back with an oil analysis..this is much like what is done to jet engines where a sample goes thru a burn process that breaks the oil down. You get a report back on the condition of the motor and they tell you whether the oil needs to be refreshed. Check out the link I provided, they give instructions on what is needed to test your oil. The notion that you need to change every 3500 miles only puts dollars in the pockets of the oil companies, and if you do the math, you buy five or six quarts of synthetic per year and if you fall prey to the 3500 change mentality, you are buying five-quarts per change x seven changes..or 35qts of oil plus seven filters. It's your money! Synthetic is not going to cost you more over the same span of time.
Bottom line, no matter what you do, if you plan on keeping the vehicle, use Synthetic. It is better on your car and it is better for the environment since you don't change as often.
Sorry to run on, the 3500 change mentality is unnecessary, even the Europeans go 7500 miles with petrolium products. Try
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and do the research.
mike
snipped-for-privacy@bowl>> On Thu, 6 Apr 2006 19:18:31 -0500, "HockNeck"
>> graced this newsgroup with:
>>
>>
>>>I don't agree with Jim V.
>>>
>>>All the independent researchers will tell u synthetic is superior in
>>>application than conventional oil.
>>>Synthetic does not break down under similar conditions as quickly as >>>conventional.
>>>You pay more for syn, but you can stretch the oil intervals much further,
>>>so the extra cash upfront
>>>pay's for itself in the long run.
>>>
>>>Is it necessary like Jim states? Probably not. But it's not about
>>>"necessary". It's about the big $
>>>investment you just made in a new car. If you want the best, then buy >>>synthetic. >>>
>>
>>
>>
>> I agree. Switch at first oil change and stick with synthetics.
>
> Go ahead it's your money. But have you EVER seen a Nissan engine with ring
> or bearing failures? They are extremely well designed and built. You could
> use the cheapest API certified oil and change it every 10K and you still
> won't have lubrication related problems for 200K. Go on
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> sometime and look at how cheap used Nissan motors go for compared to
> others. It's because there's very little demand for them. They just don't
> die no matter what oil you use.
>
>