Mixing won't hurt anything and they will mix fine. It's just that I think it'd be safer to get the viscosity up a tad from a 10w-30 for a big muscle car engine. If they had a VR1 10w-40 I'd use that (20w-50 would be too thick IMO), but they don't. One quart of 20w-50 mixed in with the 10w-30 would effectively give you a thin 10w/15w-40.
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426 HEMI: switch from Valvoline to Rotella T or ??
- Thread starter triggerfish
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Both Brad Penn Racing oil and Valvoline VR-1 make a straight 40 wt. also.
triggerfish
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Sounds very interesting & I'll probably mix them next oil change. Still summer here & temps are in the 90's during the day & cool in the mornings. Is there an advantage using 10/40 over straight 40 weight?
Originally Posted By: triggerfish
Very well said & this eve, on the way home from a big car show, a WRX turbo Subaru pulls up next to me @ the light. I let him go 1st & he sounds his blow off valve. I stomped it & shifted @ 6 grand in 1st & 2nd. The Hemi's roar echoed so loud under the overpass, I doubt if he could hear himself think. He quickly turned left @ the next light. Took me right back to my high school days in 70, racing everwhere & everyone. I still got the ear to ear smile on my face...
Yeah, well said, what pieces me off is, if by some miracle he won, he'd be there to rub it in your face. But, u win and they cower away tail btwn legs. No props for the win from young guns for the most part these days.
Very well said & this eve, on the way home from a big car show, a WRX turbo Subaru pulls up next to me @ the light. I let him go 1st & he sounds his blow off valve. I stomped it & shifted @ 6 grand in 1st & 2nd. The Hemi's roar echoed so loud under the overpass, I doubt if he could hear himself think. He quickly turned left @ the next light. Took me right back to my high school days in 70, racing everwhere & everyone. I still got the ear to ear smile on my face...
Yeah, well said, what pieces me off is, if by some miracle he won, he'd be there to rub it in your face. But, u win and they cower away tail btwn legs. No props for the win from young guns for the most part these days.
Originally Posted By: triggerfish
Sounds very interesting & I'll probably mix them next oil change. Still summer here & temps are in the 90's during the day & cool in the mornings. Is there an advantage using 10/40 over straight 40 weight?
I'd still consult the engine builder and find out which viscosity he recommends. Might want to start taking some oil samples as well to nail things down.
Sounds very interesting & I'll probably mix them next oil change. Still summer here & temps are in the 90's during the day & cool in the mornings. Is there an advantage using 10/40 over straight 40 weight?
I'd still consult the engine builder and find out which viscosity he recommends. Might want to start taking some oil samples as well to nail things down.
No, run the straight 40 wt. You would have to do a lot of mixing and matching to come up with a 10w-40 and we all know that grade shears pretty heavily.
I'd actually be inclined to run the straight 40 weight as well, especially given the hot temps in Reno. However, when it starts getting cold, you'd want the 10w-30 in there.
Heck, you have Brad Penn in there, might as well use that up before you try and reinvent the wheel - it's eons better than the Valvoline 10w-40 that was in there before for an engine like yours.
triggerfish
Thread starter
Unfortunately, I only have the factory oil pressure gauge & can't hide a stewart & warner gauge in the glove box cause the MSD AL6 is in there. I should relocate the MSD under the dash & put a set of temp gauges in the glove box. I'll probably do it this winter. The needle on the gauge is @ 3/4 when cold & stays above the 1/2 mark when driving. At idle (hot), it goes down to the 1/4 mark, but rises quicly. Think its got good pressure. Seems like I should stick w/ the 10/30 or the VR1 40.
triggerfish
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He would probably have beat me, since those cars run in the 12's & mine is probably high 12's, but he doesn't know that. Not bad for almost 40 yr old technology.
triggerfish
Thread starter
Drew, I just read a post about spun bearings in a 500 HP Toyota & one guy said racers w/ built turbo Toyota Skylines were blowing their motors tracking on 10/30. Would a straight 40 or 15/50, 20/50 weight Brad penn or VR1 be better for my Hemi? IS the 50 weight too thick? I don't baby it & give it a good work out on the highway.
Fish,
I would go straight 40 wt. Penn Grade 1 or Valvoline VR-1 40 wt. I just sent out a VOA of the Penn Grade 1 40 wt.Hopefully it will come back soon. There is a big difference between a 426 Hemi and a turbo rice-burner.
I would go straight 40 wt. Penn Grade 1 or Valvoline VR-1 40 wt. I just sent out a VOA of the Penn Grade 1 40 wt.Hopefully it will come back soon. There is a big difference between a 426 Hemi and a turbo rice-burner.
triggerfish
Thread starter
Thanks Drew. I'll be watching for the results of your test & hopefully, can exchange the Penn 10/30 for 40 weight if the tests come back good. If not, its the VR1.
You should try Schaeffer's .Ive tried the differnet brands and was a die hard Amsoil user for a long time.I'd say with out a doubt Schaeffer's is the best of the bunch.I personally saw a 12,000 rpm plus bike put in Schaeffer's oil ,and run the 1/4 mile.It went in green and came out green.Every other oil we tried ,went in whatever color the manufacture made (in Schaeffer's case they color it green so you don't mix atf or any other oil up) and came out milky white and foamy.We were easily able to use this oil for more runs without it being destroyed .A big cost saving .If you are looking for the ultimate in protection this is the oil for you.
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Go to Brad Penn Racing's site and read Tom Hemphill's testimonial about what his engine and oil endured one race weekend and you'll have to respect Penn Grade 1 oil.
I'm sure penn grade 1 oil is good but from my experince I think
Schaeffer's is the best.The real proof of any oil is real world testing.Lab results are limited and can be skewered.1/4 mile racing or long endurance racing puts the most demands of any oil.This oil is proven with out a doubt.
Schaeffer's is the best.The real proof of any oil is real world testing.Lab results are limited and can be skewered.1/4 mile racing or long endurance racing puts the most demands of any oil.This oil is proven with out a doubt.
Originally Posted By: ProStreetCamaro
Delo 400 will be fine and so will rotella dino or synthetic. My camaro has a 600 lift solid cam with very fast ramps (on the verge of being to fast for a flat tappet cam) and it lives very nicely with the Delo 400. If you want the very best for your vintage Hemi (sweet engine by the way!) you could run the Dominator racing oil from amsoil or the Synthetic Heavy-Duty Diesel & Marine Motor Oil SAE 15W-40 (AME) from amsoil. The way I see it you want the very best possible protection for that Hemi (they are getting hard to come by now days and are very valuable) so spend the extra couple bucks and run Amsoil.
When you say Delo 400 you mean the non LE stuff, right? The SL/CI-4?
hard to find now a days.....
Delo 400 will be fine and so will rotella dino or synthetic. My camaro has a 600 lift solid cam with very fast ramps (on the verge of being to fast for a flat tappet cam) and it lives very nicely with the Delo 400. If you want the very best for your vintage Hemi (sweet engine by the way!) you could run the Dominator racing oil from amsoil or the Synthetic Heavy-Duty Diesel & Marine Motor Oil SAE 15W-40 (AME) from amsoil. The way I see it you want the very best possible protection for that Hemi (they are getting hard to come by now days and are very valuable) so spend the extra couple bucks and run Amsoil.
When you say Delo 400 you mean the non LE stuff, right? The SL/CI-4?
hard to find now a days.....
Originally Posted By: jimrat
Originally Posted By: ProStreetCamaro
Delo 400 will be fine and so will rotella dino or synthetic. My camaro has a 600 lift solid cam with very fast ramps (on the verge of being to fast for a flat tappet cam) and it lives very nicely with the Delo 400. If you want the very best for your vintage Hemi (sweet engine by the way!) you could run the Dominator racing oil from amsoil or the Synthetic Heavy-Duty Diesel & Marine Motor Oil SAE 15W-40 (AME) from amsoil. The way I see it you want the very best possible protection for that Hemi (they are getting hard to come by now days and are very valuable) so spend the extra couple bucks and run Amsoil.
When you say Delo 400 you mean the non LE stuff, right? The SL/CI-4?
hard to find now a days.....
just looked here, the Zn and P levels between LE and 400 SL look trivial.... or am I missing something?
https://www.cbest.chevron.com/msdsServer...ue&lbLanguage=e
Originally Posted By: ProStreetCamaro
Delo 400 will be fine and so will rotella dino or synthetic. My camaro has a 600 lift solid cam with very fast ramps (on the verge of being to fast for a flat tappet cam) and it lives very nicely with the Delo 400. If you want the very best for your vintage Hemi (sweet engine by the way!) you could run the Dominator racing oil from amsoil or the Synthetic Heavy-Duty Diesel & Marine Motor Oil SAE 15W-40 (AME) from amsoil. The way I see it you want the very best possible protection for that Hemi (they are getting hard to come by now days and are very valuable) so spend the extra couple bucks and run Amsoil.
When you say Delo 400 you mean the non LE stuff, right? The SL/CI-4?
hard to find now a days.....
just looked here, the Zn and P levels between LE and 400 SL look trivial.... or am I missing something?
https://www.cbest.chevron.com/msdsServer...ue&lbLanguage=e
Triggerfish,
Feel free to check out my Penn Grade 1 40 wt. in the VOA Forum.It would be a great oil for you to use.
Feel free to check out my Penn Grade 1 40 wt. in the VOA Forum.It would be a great oil for you to use.
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