So I've reached about 44k miles on my 2015 GT Mustang, and

...you haven't changed it yet ? Jesus anon.

Use a full synthetic 5W-20.

>>17130006
No I have changed it before, every 4000 miles, I just use the Motorcraft Synth blend. I just want my engine to be healthy ;_;

>>17130060
I run a 2014 V6 and will start using royal purple 5w-20 synthetic. The dealer uses synthetic blend but fuck that. I change my own oil so it's not too pricey.

Full synthetic of what ever brand you think is good.

You may as well ask what religion is best if you're going to ask which oil is best.

>>17129993
>5W-20
That is available in conventional and you will save a ton of money.

>>17129993
The cheapest source of 5 quart jugs of full synthetic oil is at walmart. Full synthetic is better as there is none of the conventional oil in it that oxidizes and changes vicosity. Don't get the oils whose labels say "high mileage" because those contain seal swell. At 44K, your seals should still be tight, so swelling them only wears the tight seals out sooner. Any of the 5W20 major full synth oil brands are good: mobil1, quaker state ultimate durability, pennzoil platinum, Valvoline.

>>17130533
>5 quart jugs
Those are a real cunt to pout though, and often spill.

>>17130533
>none of the conventional oil in it that oxidizes and changes vicosity
Just fyi: synthetic oil still oxidizes and changes viscosity with oxidation albeit not as quickly as conventional

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Motul, hands down.

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>>17129993
every 4k miles? just get the cheapest 5w20 synthetic on sale. Whatever you do, use a good oil filter.

pic semi related

>>17130562
Funnel my nigga

Doesn't synthetic last every 10k miles?

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AMSOIL

PSST MEET ME BEHIND THE TIRE SHOP AND ILL SELL IT TO YOU