ZZ502/502 and Oil Weight - Chevelle Tech
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  #1  
Old Sep 9th, 08, 6:55 PM
JodysTransmissions JodysTransmissions is offline
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Default ZZ502/502 and Oil Weight

What weight oil are you guys using in your 502's 10w/40 or 20w/50?

Thanks...........
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  #2  
Old Sep 9th, 08, 8:27 PM
BillK BillK is offline
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Default Re: ZZ502/502 and Oil Weight

Jody,
Same reply as in the Camaro forum ...... 15w40 Mobil1 in the 4 502 marine versions we have done in the last two years.
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  #3  
Old Sep 9th, 08, 8:31 PM
Dave427 Dave427 is offline
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Default Re: ZZ502/502 and Oil Weight

10W30, if you put 20W50 it will slow down. I am sure 10W40 wouldn't hurt though.

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Old Sep 9th, 08, 9:23 PM
GRN69CHV GRN69CHV is offline
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Default Re: ZZ502/502 and Oil Weight

i am running 50/50 mix of 10/30 & 20/50 synthetic currently in my hyd roller motor, but I am running Crane hyd roller lifters. I found oil pressure stays up at idle (50# hot) and lifters are a lot quieter. Factrory specs on a ZZ502 call for 10/30 though.
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Old Sep 9th, 08, 9:58 PM
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Default Re: ZZ502/502 and Oil Weight

http://www.gmperformanceparts.com/_r...ngine_Base.pdf

You might find some interesting reading here........
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Old Sep 9th, 08, 10:45 PM
69-CHVL 69-CHVL is offline
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Default Re: ZZ502/502 and Oil Weight

My 454HO had 5w-30 written on the oil fill cap.
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Old Sep 9th, 08, 11:10 PM
JodysTransmissions JodysTransmissions is offline
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Default Re: ZZ502/502 and Oil Weight

Thanks for the replies guys..............

Well, I have my manual and GM states to use 5W30 synthetic racing oil after the break-in. I have not used synthetic in my 502 at this time and my concerns are........

Can I expect oil seal leaks from using synthetic?

5W30 seems very light weight compared to my other big blocks.

It seems that a lot of people like Mobil1, is this the best out there?

What other brands of synthetic are considered racing fluid?

What mileage intervals do you guy use with synthetic?

Tall or short oil filter with synthetic?

I plan on changing the oil and filter on mine this week/weekend.

Your thoughts are welcome and thanks.
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  #8  
Old Sep 10th, 08, 8:38 AM
69-CHVL 69-CHVL is offline
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Default Re: ZZ502/502 and Oil Weight

We'll, all of the GM info is a little suspect to be honest, seem like they dont have their act together with alot of things (suprise!).

For example, they state that initial timing should be set at 4*, total 26* - yeah right! I couldnt even get my motor to run with the 4*. But, some other info from GM says to run 36* total

Looks like the manual/info provided has specs listed for a run-of-the-mill truck 454 motor, which leads me to believe that the 5w-30 is also incorrect. I did run the 5w-30 for a couple of years and didnt notice and difference. Maybe their tolerances are tighter .

Bottom line, you cant go wrong with a 10w-30/40 dino oil, I even ran 20w-50 but I had high oil pressure and it took a while for it to settle down. I would think it just beats on the oil pump/dizzy a little more than necessary.
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  #9  
Old Sep 10th, 08, 9:56 AM
69badboy 69badboy is offline
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Default Re: ZZ502/502 and Oil Weight

10w/30. Valvoline.
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  #10  
Old Sep 10th, 08, 10:03 AM
GRN69CHV GRN69CHV is offline
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Default Re: ZZ502/502 and Oil Weight

Keep in mind. Conventional oil has heat activted (heat responsive) thickeners. So, the hotter the oil, the thicker it gets. Synthetic is non-responsive (not as responsive) to operating temperature. One major problem with conventional oil is that in race situations (ie. drag racing), the oil is very thin at start up in a cold motor. For guys that have a oil temp gauge installed, they can get it to proper oil temp and proper viscosity. For the average guy, it's a crap shoot.

For comparison, I just did an oil change. Went from 10/30 conv to that prior mentioned mix of 10/30 & 20/50 synthetic (only had two qts of 10/30 synth here, hence the added 20/50). Oil pressure went from approx 30# hot to 50# hot at idle. Odds are, I don't need the 20/50. Can tell you, the valve train is a lot quieter with the 20/50 in there.
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  #11  
Old Sep 10th, 08, 1:27 PM
JodysTransmissions JodysTransmissions is offline
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Default Re: ZZ502/502 and Oil Weight

Quote:
Originally Posted by 69-CHVL View Post
We'll, all of the GM info is a little suspect to be honest, seem like they dont have their act together with alot of things (suprise!).

For example, they state that initial timing should be set at 4*, total 26* - yeah right! I couldnt even get my motor to run with the 4*. But, some other info from GM says to run 36* total

Looks like the manual/info provided has specs listed for a run-of-the-mill truck 454 motor, which leads me to believe that the 5w-30 is also incorrect. I did run the 5w-30 for a couple of years and didnt notice and difference. Maybe their tolerances are tighter .

Bottom line, you cant go wrong with a 10w-30/40 dino oil, I even ran 20w-50 but I had high oil pressure and it took a while for it to settle down. I would think it just beats on the oil pump/dizzy a little more than necessary.
I am using 36* total advancement too. To me 26* total would be a joke. This is why I like these forums.

The same oil spec of 5W30 is for the ZZ502/502, I think I will try the 10W/40 Mobil1. http://www.gmperformanceparts.com/_r...ngine_Base.pdf
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  #12  
Old Sep 10th, 08, 1:42 PM
JodysTransmissions JodysTransmissions is offline
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Default Re: ZZ502/502 and Oil Weight

Check this info out at Team Camaro from SepsiP...................

http://www.camaros.net/forums/showthread.php?t=141438
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  #13  
Old Sep 10th, 08, 2:10 PM
Dave427 Dave427 is offline
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Default Re: ZZ502/502 and Oil Weight

Good article I read the same one. When we put 5W30 in the last 502 it idled around 10-15 psi oil pressure. So we put 10W30 in it didn't make a difference. As soon as you touched the gas the gauge flew up to 40 psi. The only problem I have run into is the 4 quart pan. There is not enough volume if you plan on racing it. I have installed a handful of ZZ502's they have all worked flawless. The one best investment is the Moroso oil pan, that way you can re-use the windage tray and the oil control is alot better. The article read that 10W40 would make it better, I agree.

Dave
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  #14  
Old Sep 11th, 08, 12:32 AM
JodysTransmissions JodysTransmissions is offline
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Default Re: ZZ502/502 and Oil Weight

Quote:
Originally Posted by Dave427 View Post
Good article I read the same one. When we put 5W30 in the last 502 it idled around 10-15 psi oil pressure. So we put 10W30 in it didn't make a difference. As soon as you touched the gas the gauge flew up to 40 psi. The only problem I have run into is the 4 quart pan. There is not enough volume if you plan on racing it. I have installed a handful of ZZ502's they have all worked flawless. The one best investment is the Moroso oil pan, that way you can re-use the windage tray and the oil control is alot better. The article read that 10W40 would make it better, I agree.

Dave
What oil pan are you using, do you have a part number? I would like to check it out.

I don't know about the K&N oil filters but, I just installed one on my 502. They are extra deep and with my GM oil pan it took 5-3/4 quarts to top it off.
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  #15  
Old Sep 11th, 08, 1:11 AM
Dave427 Dave427 is offline
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Default Re: ZZ502/502 and Oil Weight

Moroso 20411

Dave
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