Saw an analysis of the new Havoline GF-4 formulations, and it is very impressive. Excellent base stocks, and very high moly count - over 400 ppm! The UOA's for this product have been great in 5w20 in Honda's and Acura's, so the 10w30 should be a pacesetter in 10w30 as well. Make sure you check the bottle for the GF-4 appellation.

With products like this, I may never go to synoil. Since I only drive about 2000 miles/year, I "time out" before i wear out my oils, so synoils are a waste, as their only real advantage given the state of today's best minoils is extended drain interval.

 

Thanks for the info, Road Rage. Do they make a 5W-40? I'm moving to Houston this summer and will be looking for a new motor oil. Although I like the Maxlife synthetic, I don't think they offer the 5W-40.

 

I do not think so - if you want to use 5w40, why not Delvac1?
www.avlube.com

BTW, I had thought of using 10w30 in my 2004 TL, but the wear numbers for the 5w20's look amazing - perhaps there is more to this fast flow stuff than meets the eye, although it is more likely that the mfrs put their all in developing the low vis oils to win over the doubters, and ensure that Ford and Honda vehicles do not meet an early demise.

So you may want to stick with the 10w30.

 

I will consider the Delvac1, but realistically, I probably won't even leave the house if it's above 100degreesF! I like the advice that you and others have offered regarding staying with a good motor oil if it works. So far, the F22C1 seems to like the Maxlife syn a lot. My audible perceptions of less engine noise (valvetrain especially) and a recent UOA seem to confirm this.

 

Road Rage, since you're talking about oils, again, what do think about Mobil 1 0W-40? Would seem to have a great range: My only concern would be with the amount of additives they used to get this range, that the oil might break down quicker...

 

I tend to avoid oils with a wide vis of over 40. As I stated earlier, I have not seen any evidence that standard min or syn 40w's provide any benefit over a quality 30w, which is highly shear stable. There is mounting evidence that flow rate, esp at startup, figures more into wear resistance than high temp vis rating. Factor in the parasitic power losses inherent in pumping thicker oil, and there may be more to lose than gain. Unless you do Autobahn driving, I would not even consider the 0w40. Even the 5w40 Delvac1 I have has not been used yet.

 

subscribed.

 

Thanks Road Rage. I'll stick with the standard 10w-30 for summer and 5w-30 for winter months.

 

It's been added to the Oil Journals. Thanks RR

 

RR: Where can I read more about the new Havoline GF-4 formulations?