Synthetic oil

[Shenkey58]

With all the myths about oils today -I was wondering:
When is it ok to switch to synthetic on new Mustangs 5.0 ?
Is there really a break in period to avoid synthetic during that time?
I hear after 1000 or 3000 miles but nothing etched in stone as they say.
Anybody have any good details?

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[Ecoboosted]

I changed my with oil with synthetic oil at 500 miles. I like to get the original oil out early and to make sure no break in material is in the factory oil. Needed? probably not. I then change my oil every 5000 miles. It's piece of mind for myself. Some say even that's a waste and to go by the oil life monitor.

 

[Sub-Moa]

Pay attention to what section you post in. This is the wrong section for this topic.

 

[Ultrakla$$ic]

https://540ratblog.wordpress.com/


I suggest everybody seriously read this... It's long but well worth the time

 

[daltron]

With all the myths about oils today -I was wondering:
When is it ok to switch to synthetic on new Mustangs 5.0 ?
Is there really a break in period to avoid synthetic during that time?
I hear after 1000 or 3000 miles but nothing etched in stone as they say.
Anybody have any good details?

The factory fill is Motorcraft synthetic blend 5w-20, feel free to change to whatever you want whenever you want. I changed to a full synthetic around 1K miles (AMSOIL SS).

 

[wildcatgoal]

I changed at 2500, as always. Using and will be using Pennzoil Ultra/Ultimate/Whatever "from natural gas" oil this time, but historically have used Mobil 1. Motorcraft filter.

 

[fionic]

+1 for amsoil

 

[Lost]

https://540ratblog.wordpress.com/


I suggest everybody seriously read this... It's long but well worth the time

Good read. I am looking for Quaker State Ultimate Durability 5w-20 next shopping trip!

 

[Sub-Moa]

https://540ratblog.wordpress.com/


I suggest everybody seriously read this... It's long but well worth the time

Thanks for posting. It was a good read. To summarize the article, zinc should not be a deciding factor in oil choice during break in or as a regular fill. None of the break in oils were in the top list of oils in his testing.

The author states 5W20 Quaker State Ultimate Durability, API SN, GM dexos 1 approved, synthetic (gold bottle) is the best oil when not using additives like prolong engine treatment 121,396 psi but drops to 92,893 psi when operated at 270 degrees F.

5W30 Quaker State Ultimate Durability, API SN, GM dexos 1 approved, synthetic (gold bottle) is the best in maintaining its wear protection in high temperature applications. 113,377 psi initial with only a 3.7% drop (109,211 psi) at 275 degrees F vs 230 degrees F initial.

An interesting note that the 5W30 Pennzoil Ultra, API SM synthetic tested higher than the newer 5W30 Pennzoil Ultra API SN synthetic. That doesn't make any sense to me.
115,612 psi vs. 92,569 psi

 

[Sinister]

The factory fill is Motorcraft synthetic blend 5w-20, feel free to change to whatever you want whenever you want. I changed to a full synthetic around 1K miles (AMSOIL SS).

Same here, Amsoil SS at around 1K miles.

 

[Hack]

You didn't ask this question, but expensive oil may not be worth the money unless you are planning to put a lot of miles on the car and actually wear out the engine. If you are going to sell in the next 5-10 years, just run the Ford oil and call it good.

 

[daltron]

You didn't ask this question, but expensive oil may not be worth the money unless you are planning to put a lot of miles on the car and actually wear out the engine. If you are going to sell in the next 5-10 years, just run the Ford oil and call it good.

If it's your DD and all you do is obey the law and never shift above 3K, then yeah. But, if you track your car, drive it aggressively, shift it higher in the powerband, etc then protect that baby with great oil. It's not like it's expensive, what's an extra $10-30 per oil change when you're talking about a 20K-40K+ car?

 

[ElAviator72]

Prepare for every Amsoil dealer in the forums to come out opcorn:

(not that Amsoil is a bad product! )

Now that we got that aside, I don't think it's a bad thing to switch to synthetic on the first oil change.

I got 277,000 miles out of my 1999 Pontiac Sunfire GT by only using synthetic in it It still had life left in it and decent compression (1-2 PSI below factory spec!) when I sold it to my mechanic's daughter last August...

My last Mustang (which I only had the privilege of owning for 4 1/2 months before it got creamed by a delivery truck driver :doh: ) I had the dealer change the oil with full synthetic at its first oil change: 5,000 miles (and the factory oil on the dipstick still looked really clean!).

 

[wildcatgoal]

I got 250K on a Nissan Altima using Walmart's conventional and high-mileage conventional oil starting at 22K. Changed it every 5K. Sold car still running fine. Unfortunately, the auto transmission did not have much of an interest in going to first gear without some encouragement after about 175K that got too bad to deal with when I finally dumped it. A number of neutral drops in the high school hangout parking lot may have contributed to its "peculiarities".

 

[daltron]

With performance cars, people should gauge oil just by how long a motor lasted, but also by also by how much (if at all) performance degraded.

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