Im gonna try a royal purple oil change. Anybody else doin this? Did it help your mileage? Is it worth the money?

Thanks,
Derek

 

It's a good quality synthetic. I don't know if it's any better than M1 or any other synth.
I run M1 and I think I get better mph for it. Certainly it's better for cold starts and abusive behaivior

 

horsepower tv did a complete fluid change on a camaro and a dodge truck one time....they dyno'd them before and after. The results weren't worth the additional costs.....it was less than 10HP, I think, on both vehicles. They did engine, tranny, transfer case, and rear diff's. If you're just doing the engine, you won't get you any noticeable mpg improvement.

 

June 2006 Sport Truck (page 90) did a conventional oil dyno pull, then dropped all fluids and replaced with royal purple and then did another dyno pull which netted a 10 HP gain. Dyno pullls were 30 minutes appart.

 

royal purple is good, but costs too much. AMSOIL is the way to go

 

heres my thoughts.

15.1 with 35xx miles with K&N filter/flowmaster muffler DINO oil
14.6 with 15,xxx miles with K&N filter/flowmaster muffler with royal purple oil. same basic temp out side and track conditions.

biggest difference i seen was the mileage and the mileage was all with syn oil. no other mods were done. yes i know motor did break in but i used syn the whole time. i noticed the truck was better over all and quieter then other trucks that were similar.

ive used it for 45k miles in the 5.3 i used to have, no it didnt fail i pulled it to be replaced with my LQ9. right at the moment i run dino oil but will go back to royal as soon as i get break in miles on it again

 

How much is RP a quart? I use M1 and it's about $4 to $6 a qt here.

I don't know if I got any mpg or hp gains from it. It lubes better and keeps the engine cleaner...that's good enough for me.

 

6.50 per quart at oreilley.

Derek

 

so you used conventional oil at 35K miles and the royal purple at 15K miles?

 

no 35xx is 3,5xx miles like in 3500 miles
truck has had full syn in it since the first oil change. at 3,5xx i still had the factory oil in it

get it now?

with what i described and Efans i was getting 20mpg with a/c on and typcial daily driving. in PGH,PA