rp race 5/20 vs. rp synthetic

[svtsilversnake]

so it about time for an oil change and right now im runnin 10/30 rp.........and i was thnkn of switchn back to 5/20 since thats what is recomended.........and wasnt sure if i should get the race oil cuz im sure its better but for how i drive if i would be just as happy and runnin just as well with the high perf rp 5/20..............or if i should stay wit 10/30......help me decide guys

[hotwheels]

Stay with a good brand 10w30 synthetic.......

[svtsilversnake]

so u dont thnk 5/20 will make my motor run better......thats what it says to use on my cap but i always thought 10/30 protected and clinged to ur parts bettr

[hotwheels]

I believe 10w30 is the perfect wieght motor oil........good for all conditions.

[lostsohcs]

I use R/P Synthetic 5W20. Their race oil is for extreme performance situations such as using exotic fuels, and is pretty expensive for street use. I think that it would be overkill.

The argument for using a lighter weight oil is that it offers less resistance to crankshaft motion and flows easier. So in theory you can get better gas mileage and more power with lighter oil. In reality there is probably little difference in 5W20 and 10W30 in an engine that doesn't regularly see 10,000 RPM.

I like Royal Purple and would recommend it, but like all things opinions vary.

[svtsilversnake]

i have rp 10/30 now so i guess i stick with it....thanks guys

[poneyexpress]

I like the 5 20 for 2 reasons, the tollarances are tighter in the mod motors thats why they say 5 20 , and it's winter time and the lighter weight oil should flow better on those cold mornings. Just my 2 cents , either way you should be fine.

[svtsilversnake]

thanks bro im still debating....also in the process of joinin the bmc......my buddy is on that site

[Yellow94GT]

I read somewhere, that Ford suggest the 5w20 or whatever is printed on the oil cap, to help increase fuel economy. But I wouldnt use the race oil, unless you plan on racing all the time.

[BLWN93]

20/50 castrol syntec synthetic is what I use. Works awesome....