Went to walmart today to get 6 qts of Mobil 1 and to my shocked disbelief, found the 5W-20 in a 5-quart jug! This is the first time I have seen 5W-20 in a 5-qt jug anywhere, and I have been looking for the past two years since getting my '05 GT. In fact, there was one stretch for about a month when I could not find Mobil 1 5W-20 at all, even in one-quart bottles - that was scouring 2 local walmarts, 2 AutoZones, and several other auto parts stores. There's always plenty of 10W-30 and 5W-30, but it always seems to be hit or miss with the 5W-20...

So I was super-stoked today when I finally found the 5W-20 in the economical and convenient 5-qt container. There was only one jug in the store, but now I at least know that Mobil does put this stuff in the big jugs. It was $23.62 for the bottle, and $5.97 for the single quart bottles, so buying it in the big jug costs about $4.72/quart. And often Walmart has the 5-quart Mobil 1 jugs on sale for $21, so it is possible to get it even cheaper. Still, it was great to get it even at the regular 5-qt price.

 

Sorry to rain on your parade. Thanks for looking out though.
http://forums.bradbarnett.net/showth...ht=mobil+5w-20

 

The S197 GT needs at least 6 qt with an oil filter change.
I plan to use Supertech 5W-20 ($1.54/qt). There's a 5 year / 60k powertrain warranty, so what the heck. I'm using API SM / ILSAC GF-4 5W-20 so Ford shouldn't be able to say anything bad about this oil unless they can provide me with free Motorcraft 5W-20.

 

Congratulations,

You figured out how to save $20.00 an oil change
So I guess you don't change your oil before 5,000 miles either?
Penny wise and pound foolish.

 

I plan to follow the severe duty OCI (3k / 3 months). Since all 5W-20 is at the very least a Group III synthetic or Group II/III synthetic blend, it shouldn't be a problem. I have yet to see a Group I or Group II 5W-20.

It's not about saving money, but rather how often you change your engine oil. I've been using Mobil 1 in my 4.6 2V and the 5.4 2V V8 and quite frankly, I haven't noticed any change in gas mileage or performance whatsoever. I've switched to all synthetics in the Crown Vic and it did nothing for gas mileage (Mobil 1 ATF in the 4R70W, Redline gear oil).

The Stang's engine has a 5 year / 60k mile warranty, so for me it will be a 5 year warranty.

 

It's not the gas mileage that makes a difference, it's how clean the engine is by using it.

I personally wouldn't recommend the Supertech brand. Honestly, why not just use Ford Motorcraft oil. That stuff is pretty cheap at local parts stores... I think it is even cheaper than Castrol and the other names. Here's how I figure oil: if it's good enough for the dealer, it's good enough for me.

Although, one could argue that all oil comes from the same hole in the ground, so what's the difference. But, I think that the "name brand" oil companies put special "additives" and what-not in their oil. It's the same with gasoline: all of it comes from the same place, but the name brands put additives in it.

In the end, it all comes down to preference. I personally will NEVER use Quaker State. Also, now that Pennzoil is owned by QS company, I will never use them again either. For me, its Castrol or factory brand oil for conventional, and Mobil 1 if synthetic.

 

There was a big thing on BITOG several months ago where gas chromotography tests indicated M1 (15W-50?) used a Group III basestock. In other words, Mobil 1 is the new Castrol Syntec / Valvoline. They are playing games with the "synthetic" marketing much like Castrol did years ago. If you want to pay $4.60/qt for Group III, keep buying the Mobil 1.

I thought about going with the Motorcraft 5w-20, and I may just switch around between Motorcraft and Supertech depending on what's available at the time. Pennzoil Platinum 5W-20 is also pretty affordable at $4/qt and I recall that it even contained a small amount of Group V basestock with its Group III basestock. I am using the Pennzoil Platinum 5W-30 in my 4.6 2V V8 and can't tell a difference between M1 5W-30. German Castrol 0W-30 yielded about a 1-2 mpg hit though since it is thicker than most synthetic 5W-30s (the 0W part is misleading).

I understand what you're saying about the dirty engine, but 5W-20 at the very least is going to be a synthetic blend or Group III synthetic. Last I checked there weren't any true "dino" Group I/II/II+ 5W-20 formulations.

 

Don't worry about raining on my parade - I was just stoked when I found this out.

Odd that the other thread is in the General Mustang Chat forum - the SN95 Mustangs didn't use 5W-20, at least my '95 5.0 liter didn't.

 

Ford made the switch over to 5W-20 in 2001.

 

Motor oil is motor oil.

Sorry couldn't resist, remember the commerical with the smoking car