what oil for the hot rod

[duke9074]

So the great debate on what oil i should start using. Looking to go to a synthetic due to oil temps, and broad ambient temp use. Summer oil temp was getting close to 270s on a 7qt moroso. Car is a 1991 ford mustang with a built aftermarket engine. She gets decent use but not weekly and less frequent once the cold north east winter hits, also sees some storage time once the snow and salt fall.
Motor Specs are as follow,
dart shp 351w block stroked to 427 full roller setup. eagle comp forged rotating assembly. mel high volume oil pump. manley pushrods. Je pistons. comp cams solid roller. brodix aluminum heads. its a 9.5 deck with 10.2:1 compression. Main clearance .024 and .004 end play. 7200 rpm limiter

cam specs intake lift .673 exhaust .673
timing at .05 intake opens 26btdc close 58atdc
exhaust opens 70 btdc closes 22atdc
intake duration at .05 264 exhaust 272
lobe lift .421 lob sep 110

I was thinking a 10w40 but figured although hard to find a 5w-50 may be better. I understand zinc and phosphate are not needed on the roller setup but still do prefer them like most would. I am concerned with corrosion, rust prevention, initial start up after sitting 2-3 weeks regularly and winter storage 6-8 weeks, as well as cold start? Thoughts opinions? HPL, RedLine, LiquidMoly, Driven HR series, or just some mobil 1 supercar corvette oil?

 

[We're Metals]

Yee hawwwwww ya way into 15w-50 Mobil 1 my brother! Save your coin for mullet hair cuts and Marlboro reds.

https://amzn.to/3XCMZ2y

 

[facility1]

Amsoil or Redline makes some really good racing oils, among many others as Torco, Schaeffer's, etc.

 

[skippermatt]

vr1 synthetic 20w50?

 

[duke9074]

looking for a winter weight of 5 or 10 as apposed to 15/20 ...... car is started at and below freezing temps to move out of the garage or to give her a winter leg stretch. I can find the 5w or 10w weights but am concerned on the storage and cold start protection.

 

[ripcord]

Put an oil pan heater in it?

The oil weight required depends on the clearances and the pump used. What kind of oil pressure does it have when hot? The Ford small block has a well designed oiling system so if you have over 20 to 30 psi idling while hot, you are probably good to go with that oil weight.

 

[B1974]

I second the oil pan heater. Get a magnetic one that you can take off in spring and stick with the oil your using in summer.

 

[CleanSump]

Ask HPL/Dave to make you a proprietary Duke blend?

 

[JohnnyJohnson]

So the great debate on what oil i should start using. Looking to go to a synthetic due to oil temps, and broad ambient temp use. Summer oil temp was getting close to 270s on a 7qt moroso. Car is a 1991 ford mustang with a built aftermarket engine. She gets decent use but not weekly and less frequent once the cold north east winter hits, also sees some storage time once the snow and salt fall.
Motor Specs are as follow,
dart shp 351w block stroked to 427 full roller setup. eagle comp forged rotating assembly. mel high volume oil pump. manley pushrods. Je pistons. comp cams solid roller. brodix aluminum heads. its a 9.5 deck with 10.2:1 compression. Main clearance .024 and .004 end play. 7200 rpm limiter

cam specs intake lift .673 exhaust .673
timing at .05 intake opens 26btdc close 58atdc
exhaust opens 70 btdc closes 22atdc
intake duration at .05 264 exhaust 272
lobe lift .421 lob sep 110

I was thinking a 10w40 but figured although hard to find a 5w-50 may be better. I understand zinc and phosphate are not needed on the roller setup but still do prefer them like most would. I am concerned with corrosion, rust prevention, initial start up after sitting 2-3 weeks regularly and winter storage 6-8 weeks, as well as cold start? Thoughts opinions? HPL, RedLine, LiquidMoly, Driven HR series, or just some mobil 1 supercar corvette oil?

I can't see a problem with the Mobil 1 but curious minds would like a picture of the car.

 

[56Cummins]

That is a serious camshaft.

What oil did you run in the summer? What is your hot oil pressure at idle and high rpm?

 

[ClutchDisc]

Personally I would run either the Amsoil Signature Series or one of their racing oils.

 

[Hohn]

Mobil 1 15w-50 has a pretty stout additive pack, it's the choice I'd make here. also good: Vr1 black bottle 20w-50.

 

[Japanese]

I was thinking a 10w40 but figured although hard to find a 5w-50 may be better.

Castrol Edge 5W-50
Valvoline VR1 synthetic 10W-30 or 20W-50 (black bottle)
Mobil 1 Classic Car 10W-30

All are available on eBay and Amazon.

 

[duke9074]

That is a serious camshaft.

What oil did you run in the summer? What is your hot oil pressure at idle and high rpm?

She is rowdy to say the least….. past few years I’ve ran driven HR6 year round. Was looking to try to improve over it but maybe I should leave well enough alone. Summer hot idle is 950rpm and still made about 35-40 psi

 

[TnT_M]

So the great debate on what oil i should start using. Looking to go to a synthetic due to oil temps, and broad ambient temp use. Summer oil temp was getting close to 270s on a 7qt moroso. Car is a 1991 ford mustang with a built aftermarket engine. She gets decent use but not weekly and less frequent once the cold north east winter hits, also sees some storage time once the snow and salt fall.
Motor Specs are as follow,
dart shp 351w block stroked to 427 full roller setup. eagle comp forged rotating assembly. mel high volume oil pump. manley pushrods. Je pistons. comp cams solid roller. brodix aluminum heads. its a 9.5 deck with 10.2:1 compression. Main clearance .024 and .004 end play. 7200 rpm limiter

cam specs intake lift .673 exhaust .673
timing at .05 intake opens 26btdc close 58atdc
exhaust opens 70 btdc closes 22atdc
intake duration at .05 264 exhaust 272
lobe lift .421 lob sep 110

I was thinking a 10w40 but figured although hard to find a 5w-50 may be better. I understand zinc and phosphate are not needed on the roller setup but still do prefer them like most would. I am concerned with corrosion, rust prevention, initial start up after sitting 2-3 weeks regularly and winter storage 6-8 weeks, as well as cold start? Thoughts opinions? HPL, RedLine, LiquidMoly, Driven HR series, or just some mobil 1 supercar corvette oil?

Sounds similar to the set up I will be putting in my "Project Cobra" with a Smeding Performance 427 SBF. I will be running 15w40 HDEO per their recommendation. If you need a 5w, why not try a 5w40 HDEO.

T

Thread 'Project Cobra'

Jan 5, 2025

Well as the story goes for my 16th birthday I asked my mom for a Cobra. I was wanting a Mustang Cobra. I got this scale model AC Cobra as a gag gift. I loved the look of the car and have wanted one ever since. Well, almost 32 years later I’ve made my dream come true. Yesterday I picked up a FFR MK3 kit. I will begin assembling it in the spring when the weather is nicer.

Just my $0.02

• TnT_M
• Replies: 122
• Forum: Vehicles

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[GW.]

Amsoil Zrod.

 

[Selmorides]

Mobil 1 Supercar 0W-40 is a good bet. Maybe Pennzoil just because it has SRT approval. Schaeffer’s has a 0W-40 with SRT approval but can you get it for reasonable $$$ unless cost is no issue. I only mention SRT approval as equal to supercar, maybe.

 

[addyguy]

You’re unlikely to use it in temps soo cold that a 15W-50 would stress it; so Mobil 1 15W-50 would be a solid, easy to get option.
Nice car!

 

[duke9074]

Mobil 1 Supercar 5w-50 is corvette and zl1 approved so corvette or srt similar application imo.

Why get a 15w-50 if a 5w-50 is available? Won’t a 5w act like a 15w at a specified temp just the 5 can go colder ie has a colder pour point ? What benefit does a 15w have over a5w ?

 

[RDY4WAR]

That engine is a prime candidate for HPL Bad Ass 5W-40. It checks all of the boxes you're looking for.

HPL's standard for rust prevention is far above anything you'll find on the shelf as they test to 24 hours in saltwater (and ace it) where as most oils on the shelf are just 4 hours in freshwater. (typical API standard) Their standard for foam is 0 ml which is great for 7200 rpm. That oil will take all the heat you can throw at it. It doesn't even reach peak friction coefficient until 305°F, much less thermal breakdown. It's really good at holding a film on parts so sitting for long periods of time won't be a concern. It's a tri-synthetic with a complete DI pack so it runs clean.