|Quote, originally posted by Max Rebo »|
|It's not a waste of money if you actually follow the extended drain intervals indicated by companies such as Amsoil, et. al.|
I have been changing my oil every 10k miles, using Amsoil, with a filter change and top-off in-between.
|Quote, originally posted by cram51 »|
|According to the service manager at my dealership (just outside St. Louis), my car (a v6 2004) should not deviate from the 5w-40 recommended by VW. As for synthetic or not, he said that is up to me. I asked him what was put in the car when we bought it - he said, unless you specify, they put in normal 5w-40. They will only put on sythetic if you ask specifically when you buy the car. |
So, in hearing this and all the input that you nice people have given me, I think I will go with Valvoline sythetic in the winter (cause my girl always just starts the car and goes in the morning - without letting it warm up for more than 10 seconds) and Valvoline synpower in the summer or "warmer" months. I, obviously, don't know much, but is Synpower by Valvoline a blend or something? Part sythetic? Thanks again all. http://****************.com/smile/emthup.gif
Oh yea, another question that shows I know nothing. Would it be hard or bad for the engine to be switching between sythetic oil and others throughout the year? Would you all just recommend sticking with one kind instead of flip-flopping like that throughout the year?
|Quote, originally posted by vwconvert »|
|Yes, synthetic is worth it for the following reasons:|
3. Your owners manual requires that the oil you use is either ACEA A3 or meets a VW 50X spec. As far as I know, only synthetic oils (and some blends) meet these specs. These specs essentially require a HTHS rating of 3.5 or higher and no dino I know of meets that (in laymen's terms, the higher the HTHS, the better your engine is "protected"). The following oils meet the ACEA A3
-Mobil 1 0w-40 and 15w-50
-Valvoline Synpower 5w-40 and 20w-50
- Castrol Syntec 10w-40, 5w-50 and 0w-30 (the German version of 0w-30 NOT the U.S. version).
- Valvoline Maxlife Synthetic 5w-30 and 10w-30.
- Castrol Syntec Blend 10w-40.
I personally use the Maxlife Synthetic 10w-30 and drain every 5k. This oil meets ACEA A3, has an HTHS of 3.6 and is also recommended for cars requiring VW50x. Not only that, you can buy it off the shelf at Walmart. I also prefer it over the other oils I listed because it has a lower viscosity spread (10-30) and therefore has fewer VI improvers and is less susceptable to VI breakdown. I don't like the large spread oils (e.g. 5w-40 and 0w-40) because they do shear down to a 30 weight which means you might get some varnishing and ring sticking over the long run.