synthetic oil

[monkeyboy]

good or bad whn changing your oil?

 

[mudnuri]

Depends on the vehicle- if you dont start from the get go with synthetic there isnt much point. Most diesel's recommend fully synthetic. Matter of fact, the Dmax comes from the factory with Mobil Delvac.

It's not beneficial to switch back and forth, some people dont like the $200 oil changes and do this- which is a total waste of money...

Brandy

 

[Meriweather]

My cardealship (where I go for oil changes and service) switched my car over to this.
I haven't noticed any change other than not having to get it changed as often. Cost the same.

 

[mudnuri]

if it costs the same, its not fully synthetic oil. more than likely its a blend....and they did you no favors by swapping it, it wont extend the life of the engine unless its started from new- or as close to new as possible, like the first 1k oil change

Brandy

 

[dennis99ss]

That is not entirely accurate. Synthetic oils, such as mobil 1, will provide more protection to the engine, because of the oil's ability to "stay on the parts" which then reduces the friction in the engine Thus, it reduces some heat in the engine, and reduces damage caused by the friction that takes place when the parts move without adequate protection. Synthetic oil will always be better for an engine, as opposed to regular oils. However, if you switch to a full synthetic from a regular oil, the synthetic will break down deposits in your engine. Your engine has an increase in buildup over time. This buildup assits in sealing places where small pin holes may develop over time, i.e. older engine. If you switch over to a synthetic from regular at high miles, you may experience small leaks because the synthetic oil will break down the deposits. Some times this is good, sometimes it is bad. You may want the increased protection that comes with the oil, and less work for the engine, and live with or replace the gasket etc. that may develop a leak.

If changing from a regular oil to a synthetic, try going to a synthetic blend first, and then move on to the fully synthetic, so as to ease the engine into the change. Of course, at low miles, a switch can be made without problem.

The synthetics will last longer, and, arguably, require less changes. When I played with cars, before the truck I have now, my HP with the synthetics was higher than regulars, but, nothing scientific about it, as the tests took place at different times in the engine, etc.

 

[eeyore25]

if it costs the same, its not fully synthetic oil. more than likely its a blend....and they did you no favors by swapping it, it wont extend the life of the engine unless its started from new- or as close to new as possible, like the first 1k oil change

Brandy

I am not trying to start an argument or tell you that you are wrong, so please don't take it that way. However I am going to disagree with you on putting synthetic in from the get go. We are Amsoil dealers and the first thing that we are told, is that synthetic oil does not go into a new vehicle until there is at least 15,000 miles on the engines. My Dh and I both have diesel trucks and have had diesels for years now, and we don't put synthetic oil until we have that 15,000 miles on it or more. I know our manual says it also. Different vehicle manufacturers may say something different though.

Good luck though.

 

[mtblujeans]

Years ago, I was told by a mechanic not to use it but I don't remember why and it could have changed or gotten 'better' by now? Because I can't remember why, I have never put it in my vehicles.

 

[vettechick99]

It definitely doesn't cost the same. My corvette took synthetic oil and the changes were about $60 each. Although with synthetic oil, you can go 5,000 miles in between changes.

 

[mudnuri]

I am not trying to start an argument or tell you that you are wrong, so please don't take it that way. However I am going to disagree with you on putting synthetic in from the get go. We are Amsoil dealers and the first thing that we are told, is that synthetic oil does not go into a new vehicle until there is at least 15,000 miles on the engines. My Dh and I both have diesel trucks and have had diesels for years now, and we don't put synthetic oil until we have that 15,000 miles on it or more. I know our manual says it also. Different vehicle manufacturers may say something different though.

Good luck though.

I do agree, some owners manuals say that- however, some also say its okay to run 87 octane in the tank- my Blazer does, but i also know that my blazer will spark knock if I do it...so i dont.

The Duramax, its recommended that at the 1,000 oil change you switch to fully synthetic- not mobil 1, but mobile delvac...of course, the manufacturer might not say it, but if you talk to anyone in service departments, or on TDP you'll hear it. Sometimes, what the manufacturer recomends isnt always the best way...I tend to take everything they say with a grain of salt LOL...heck they tell you not to let your car idle for more than a minute or two...well let me tell ya- here in Vermont in the winter- mine idles for 1/2 hour before I leave in the morning!...

Since you run diesels...you'd also know that they recommend changing fuel filters at 15K, however, not everyone does so, and some will tell you that its actually better at 30k, as long as your running good fuel.

There is so many conflicting reports on synthetic- as amsoil dealers I'm sure your aware of it, just as there is conflicting reports on diesel blends for the fuel, and fuel additives and stabilizers.

Honestly if my car wasnt a diesel I wouldnt use synthetic- a diesel engine is going to outlast a gas engine- and if I can help it along the way to make it to the 3-400K mark- instead of the 150-200K mark, well the 200 bucks for an oil change is worth it!

No argument from here....just stating another opinion

Brandy