15 Whipple oil question

[engineermike]

I split the difference and am running pennzoil platinum euro 5w40. After 10k I drained it, measured it, and there was no measurable consumption.

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[Ishyne22]

I split the difference and am running pennzoil platinum euro 5w40. After 10k I drained it, measured it, and there was no measurable consumption.

. I was teetering between 0w40 and 5w30. I’m curious as to what brand oil was breaking down on Whipple’s tests. Not all oil is created equal. I’m a firm believer in staying as thin as possible. If I Lose more than 10psi warm oil pressure I’ll go up to the 40.

 

[Jackson1320]

I use mobile1 0w40 European blend. The additive package in it is develop more for hard driving/antiwear.
5w20 and 5w50 are the same viscosity at start up. The 5w50 just doesn’t thin out as much. The bearing clearance is very tight so the thicker oil is to give your bearings a stronger layer to try to keep the bearings from contacting the crank. When you add power you increase your chance of bearing contact. I think you would be fine with ether one

 

[engineermike]

@Jackson1320 is right about the European blends. I just use euro-spec acea a3/b4 in performance applications because the viscosity and add pack are designed specifically for severe use moreso than any other gas engine oil spec.

 

[96gt4.6]

5W50 here as per Whipple recommendation via install instructions.

Been a hard 8k miles since the install, being as the car is track/weekend only driven at best. Car has 23k on it total.

No issues yet, motor is quiet as when it was new.

 

[Ishyne22]

I use mobile1 0w40 European blend. The additive package in it is develop more for hard driving/antiwear.
5w20 and 5w50 are the same viscosity at start up. The 5w50 just doesn’t thin out as much. The bearing clearance is very tight so the thicker oil is to give your bearings a stronger layer to try to keep the bearings from contacting the crank. When you add power you increase your chance of bearing contact. I think you would be fine with ether one

This is the same oil i went with with. Great oil and only $25 for 5gal at wally world

 

[engineermike]

I have to agree the Mobil1 0w40 euro is probably the best bang for the buck high-performance oil that is as good or better than the best boutique oils.

 

[Sean709]

The only thing I can add is thicker oil makes it tougher on the oil pump gears to turn and if your running stock OP gears and going to use your car in cold winter weather that is a lot on stock gears. I hardly use mine in the winter but still went with 5-30 but after seeing this info come Spring I will switch to 5-40. Thinner oil is worth a few hp also.

 

[engineermike]

5w30 and 5w50 have the same cold viscosity.

 

[Jackson1320]

The only thing I can add is thicker oil makes it tougher on the oil pump gears to turn and if your running stock OP gears and going to use your car in cold winter weather that is a lot on stock gears. I hardly use mine in the winter but still went with 5-30 but after seeing this info come Spring I will switch to 5-40. Thinner oil is worth a few hp also.

take 5w40 vs 5w20
The 5 means that it’s viscosity cold or start up is equivalent to a SAE 5 motor oil. The 20 or 40 means that the viscosity at operating temperature is equivalent to a SAE 20 or 40 motor oil.
not trying to be a dick just making sure you understand how it works.
If you did go from say SAE 10 to SAE 40 your pump probably would not know the difference. they are not exactly weak. But You would have more oil pressure and the OPG’s would have a thicker layer of oil protecting them. Your bearings would curse your name every morning for there short life. But the oil pump would just keep swimming, just keep swimming.

Thinner oil does make more h.p your right there. but too thin and you make zero h.p. But the important thing to remember is. . . Just keep swimming just keep swimming

 

[Sean709]

take 5w40 vs 5w20
The 5 means that it’s viscosity cold or start up is equivalent to a SAE 5 motor oil. The 20 or 40 means that the viscosity at operating temperature is equivalent to a SAE 20 or 40 motor oil.
not trying to be a dick just making sure you understand how it works.
If you did go from say SAE 10 to SAE 40 your pump probably would not know the difference. they are not exactly weak. But You would have more oil pressure and the OPG’s would have a thicker layer of oil protecting them. Your bearings would curse your name every morning for there short life. But the oil pump would just keep swimming, just keep swimming.

Thinner oil does make more h.p your right there. but too thin and you make zero h.p. But the important thing to remember is. . . Just keep swimming just keep swimming

Yes I know they would both be 5 at cold flow so in theory you are 100 percent correct. I still rather run a 5-30 in 30 degree weather. But after seeing this thread I am going to go up a little to 5-40 next oil change in the spring.. My car just sits in the garage all winter unless its a really nice weekend and there is no sand on the roads. Going from a hot weight per ford of 20 to 50 is a big jump with the same tight bearing clearances. FOR ME I think 40 sure will be thick enough.

 

[Platinum_5.0]

Here's my experience. Gen 3 Whipple on my 17GT. Car has been supercharger for 3 years. Only summer driven and car has 40,000 miles on it. First year I ran it at 709WHP, second summer at 740whp and this summer past up to 850ish whp on E85 and 14.8psi. Car gets driven hard, a lot. Lots and lots of 8000rpm roll races, numerous 1/4 mile track passes shifting at 8200rpm and Amsoil Signature series 5W30 is the oil I always use. Also I have an account with a local lab here who I send an oil sample into every oil change for analysis. So far my oil samples to date have been flawless! Zero signs of any abnormal wear.

 

[Jackson1320]

Yes I know they would both be 5 at cold flow so in theory you are 100 percent correct. I still rather run a 5-30 in 30 degree weather. But after seeing this thread I am going to go up a little to 5-40 next oil change in the spring.. My car just sits in the garage all winter unless its a really nice weekend and there is no sand on the roads. Going from a hot weight per ford of 20 to 50 is a big jump with the same tight bearing clearances. FOR ME I think 40 sure will be thick enough.

I think 0w40 is a excellent choice

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