The Great Oil Debate

Juice

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I run M1 or Supertech synthetic.

The Coyote gets M1 0w-40 for daily duty, and 5w-50 for track days. I change it somewhere between 5-6000 miles, and/or before a track event. 10W30 in the other beaters (5w20 recommended), and those get changed once a year when they are getting inspected. Sometimes get close to 15000 on the beaters in a year.

The "old" track toy, 91, the GT40 crate w/Strim gets 20w50 M1.

I've run Amsoil & RP, and those seemed fine too, but pricey. Used to run Castrol, but switched to M1 about 10 years ago. Yea, I'm with the "thicker oil is better" crowd. hehehe
 

IFlyEm

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I run M1 or Supertech synthetic.

The Coyote gets M1 0w-40 for daily duty, and 5w-50 for track days. I change it somewhere between 5-6000 miles, and/or before a track event. 10W30 in the other beaters (5w20 recommended), and those get changed once a year when they are getting inspected. Sometimes get close to 15000 on the beaters in a year.

The "old" track toy, 91, the GT40 crate w/Strim gets 20w50 M1.

I've run Amsoil & RP, and those seemed fine too, but pricey. Used to run Castrol, but switched to M1 about 10 years ago. Yea, I'm with the "thicker oil is better" crowd. hehehe
My car isn't gong to be tracked in the near future. It's my daily driver, daily meaning I drive it 18 miles to the airport and park it for a week, and back home again.

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Boaisy

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If it isn't going to be tracked, Amsoil with the weight specified by the manufacturer. Greg Hazlett on here is an Amsoil dealer, and can get you a deal on Amsoil.
 

IFlyEm

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If it isn't going to be tracked, Amsoil with the weight specified by the manufacturer. Greg Hazlett on here is an Amsoil dealer, and can get you a deal on Amsoil.
Thank you. Much appreciated.

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46addict

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Oil that goes into BMWs have to meet different requirements and they also call for longer drain intervals. Motorcraft Syn Blend with a Motorcraft filter will never steer you wrong. I would run the manufacturer recommended 5w-20 weight. If you're not getting enough oil pressure at hot idle during Vegas summers, use a 5w-50. That is what the Track Pack and Boss 302 call for IIRC.
 

IFlyEm

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Oil that goes into BMWs have to meet different requirements and they also call for longer drain intervals. Motorcraft Syn Blend with a Motorcraft filter will never steer you wrong. I would run the manufacturer recommended 5w-20 weight. If you're not getting enough oil pressure at hot idle during Vegas summers, use a 5w-50. That is what the Track Pack and Boss 302 call for IIRC.
You're correct... he changes his BMW every 10K. I plan on doing all the services at the Ford dealership as well. Thanks for the reply.

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o2sys

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Has anyone tried the new Mobil 1 annual protection oil? It would be nice if I can just change my oil once a year as I barely put 3000 miles a year if that but just been changing it every 5-6 months.
 

RocketcarX

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Has anyone tried the new Mobil 1 annual protection oil? It would be nice if I can just change my oil once a year as I barely put 3000 miles a year if that but just been changing it every 5-6 months.
All full synthetic carries this rating, it's just the original product updated and repackaged.
 

slackinoff

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I have a bunch of experience with the 3v ford 4.6 and 5.4......what is important is not mobil1 vs amsoil ect........RUN THAT THE CAP SAYS!!! 5w20. Even though the block is modular ( run 2v,3v, or even the Cobra 4v heads) run with the cap/ manual says. Majority of the problems are guys running a thicker oil. Trust the engineers. Those VCT and oil passages on the crank are oil weight critical to work and last. ( notice the Cobra 4v heads are non VCT and take a thicker oil)

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o2sys

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So a regular synthetic can last 12 months with only moderate use (like 3-5000 miles?)


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CCS86

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I have a bunch of experience with the 3v ford 4.6 and 5.4......what is important is not mobil1 vs amsoil ect........RUN THAT THE CAP SAYS!!! 5w20. Even though the block is modular ( run 2v,3v, or even the Cobra 4v heads) run with the cap/ manual says. Majority of the problems are guys running a thicker oil. Trust the engineers. Those VCT and oil passages on the crank are oil weight critical to work and last. ( notice the Cobra 4v heads are non VCT and take a thicker oil)

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Hahaha, sir, step away from the advice giving.

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Pentalab

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So a regular synthetic can last 12 months with only moderate use (like 3-5000 miles?)


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Yes, it can last 12 months, but don't go beyond 12 months. This is for 100% synthetic.

The semi synthetic crap is typ 3-5% synthetic..and 95-98% dino oil.

Don't forget to change the filter at the same time as the oil.
 

Pentalab

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The guy who designed the modular 4.6 sez to use 5W-30. Saleen said to use 5W-20 if NA...and 5W-30 if a blower used. I use RP 5W-30 HPS. Any 100% synthetic 5W-30 will work just as good as 5W-20 dino oil.. or 5W-20 semi synthetic.

Or use 5W-20 during winter months if driven in winter....and 5W-30 during spring + summer if a blower installed. Very unlikely to be using the blower during the winter / rainy season.
 

o2sys

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I'm thinking it turns into poison after 6 months lol



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