Racing oil advice?

[DaveFoster]

I'm asking for advice about racing oil, thinking about using a 5 w 30 Royal Purple racing oil, used to use a 50 weight Valvoline racing oil for years and switched to a 20 w 50 on my engine builders advice a couple years ago. Now I read where this light weight oil is producing extra horsepower and still doing a good job of lubricating, but if low pressure readings make you nervous at idle or coming off the track during cooldown, you may not like this 5 w 30 stuff. Our main event is almost always 30 laps on a third mile oval asphalt track, I run a 3250 pound 75 Monte Carlo with a small block 400 and Turbo 350 trans in second gear, no shifting. Any one have any thoughts or experience with Royal Purple 5 w 30 racing oil?

[fatride]

For me it's Moble1 20W50 full synthetic oil always. If your engine is put together loose you may want the extra protection of the 20/50. I don't know how much better than Moble 1 Royal Purple is :dunno Volume is probably more important than pressure anyway!

[bubbletop1961]

In my lst motor I used 10-30 in stead of 20-50 which I normaly use. I had read the same kind if info saying the lighter oil produces more hp. My engine guy would always ask WHY????. Your supposed to use 20-50. But the last time we went back thru it we just polished everything up and put her back together. (a little looser than normal.) I did switch back to 20-50 for that reason. but when we had it apart everything looked great. No signs of abnormal wear or anything. Didnt bother me. No proof it actually made more power though.

[Mike-Casella]

I've always used 20W50 and have never had an oiling problem.

[oil4kids]

In 1986 Starting using Amsoil synthetic 20w50 racing oil in my 70 396 375hp COPO Nova and never changed brands in 20 years since. I may sound biased since I sell the stuff, but if there was something better i would be using or selling it.

Royal Purple, Neo, Redline, HPS Mobil 1 are all good but Amsoil still has a little edge.

But do your homework, there all different

[DaveFoster]

I heard Amsoil had the best wheel bearing grease hands down over everybody else years ago, just couldn't find it anywhere. Now I know who to ask, info please.

[oil4kids]

Dave

yes many of the short track nascar guys call me about the grease

http://www.amsoil.com/storefront/ghd.aspx?zo=319760


or use this link top download the entire amsoil catalog

http://www.oil4kids.com/G100.pdf

there are links in the catalog to buy it straight from Amsoil without going thru me