Using Motorcraft 5W-50 Syn
5/1/13, 05:15 PM
#42
Shelby GT350 Member
I would say that a full synthetic (group V) are superior for racing (and probably all) applications, and if I can get a reasonable deal on one of these oils, I'll run it for the summer (track day) months. Otherwise group IV is fine.
Looks like Amsoil has group IV base, which is good, and better than a blend of IV and III.
The Motorcraft analysis is interesting. Surprising it has such low ZDDP, and how much shearing it shows. Doesn't look like a particularly good oil. I've never used it in the past, will definitely be changing before my first track days later this summer...
any 1/4 mile times?
6/7/13, 03:58 PM
#46
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The Amsoil 5W-30 seems to be working fine. The temperature gauge is pegged at just to the left of half, and the pressure is pegged just to the right of half. I checked the oil and it looked great. No grime. No leaks/burning oil.
6/10/13, 07:21 PM
#47
Shelby GT350 Member
Amsoil seems to be a quality product. Can't really tell just by looking of course, but I am planning to assess my first two oil changes at least and if rests show the motorcraft is not holding up, will see what ford recommends doing as an alternate (if they will recommend anything)
6/23/13, 06:02 PM
#48
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Then there is this.....http://www.triumphspitfire.com/Oiltest.html
Which says it makes no difference if you use synthetic or conventional, change at 3,000 or 6,000 miles. None at all. Not my opinion, but Consumer Reports.
Which says it makes no difference if you use synthetic or conventional, change at 3,000 or 6,000 miles. None at all. Not my opinion, but Consumer Reports.
Last edited by Lemmy; 6/23/13 at 06:04 PM.
6/24/13, 05:18 PM
#49
Shelby GT350 Member
Then there is this.....http://www.triumphspitfire.com/Oiltest.html
Which says it makes no difference if you use synthetic or conventional, change at 3,000 or 6,000 miles. None at all. Not my opinion, but Consumer Reports.
Which says it makes no difference if you use synthetic or conventional, change at 3,000 or 6,000 miles. None at all. Not my opinion, but Consumer Reports.
"no measurable differences could be observed in engine wear" which is probably true, but no indication of the oil characteristics new vs used... may not see engine wear as oil starts to break down some.
I'm 100% in on the synthetic
6/30/13, 02:38 PM
#50
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I guess I'm a lemming idiot, but the manufacturer of the engine- who has the most to lose if I follow their recommendation and it fails- says I'm supposed to run 5w50 (GT with track package)- so I guess that's what I'll do.
6/30/13, 07:42 PM
#55
Bullitt Member
When it's time for my 1st oil change, that's exactly what's going in mine - along with e AMSOIL Ea Filter - and I won't look back. I've seen too much research to convince me otherwise. I use to be a Mobile 1 guy - not any longer! I'm about ready to start bathing in AMSOIL 10w30 Signature Series....
6/30/13, 10:25 PM
#56
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When it's time for my 1st oil change, that's exactly what's going in mine - along with e AMSOIL Ea Filter - and I won't look back. I've seen too much research to convince me otherwise. I use to be a Mobile 1 guy - not any longer! I'm about ready to start bathing in AMSOIL 10w30 Signature Series....
7/5/13, 05:04 PM
#58
Shelby GT350 Member
I will use the recommended 5w50 too until warrantee is done (years down the road) by then there should be lots of data pointing to the best oils for these engines!
7/5/13, 05:20 PM
#60
Shelby GT350 Member
Yes I have seen that the missing info for me is the conditions in which the cars were driven which is the most interesting part. I think I will want/need a slightly thicker oil based on my driving style