Any reason you use 5W30 and not the 10W30 the manual calls for?Turbo Matty P said:I swear by Royal Purple 5w-30. Also, I change my oil at 4-5K miles and the RP looks great at those intervals. I could probably go longer. Also, RP is a 100% synthetic oil. No dinosaur or fossils in this stuff.
Learned along time ago that synthetic, no matter what the brand, is head and shoulders above regular petroleum products. Had 2 camaros one with a blower with over 200000 miles and never had an engine problem. Never had an engine problem with any car I ran with synthetic.Replica said:Wal-Mart, Valvoline, $17.99, ownage.
Worked ok in the boosted civic, should be ok for a low compression, low revving motor. Royal Purple is a waste of money in a stock protege.
right u want thicker oil for higher temps..and thinner oil for colder temps..because cold oil is more viscus and there for flows differently than when it is warmReplica said:5W30 and 10W30 is more an issue of what climate you live in. The temps and appropriate oils are listed in the owners manual (cant remember off the top of my head)
5W30 = cold weather
10W-30 = hot weather
Always changed my oil in a new car after 1000 miles. I buy Mobil1 at Wal-mart for 3.74, don't know what Royal purple costs,but put Redline in the Corvette once because they said it will lower the temp but it didn't so I switched back to Mobil. The Redline was 7.95 I think.AZDriftR said:why r u changing yer oil at 1K...u have like 2k left before a scheduled oil change...and the royal purple is cool and all but it a real waste of money... Mobil 1 synthetic is the best IMHO....something like a 10w 30 because its spring and all
You're no more qualified to answer it than the rest of us.Turbo Matty P said:I love all the opinions form the "experts" here.
I use 5w-30 because it's the lowest weight oil I can get away with in my motor. Engines are built to certain tolerances and clearances. I want to run the thinnest oil possible that will not cause leaks or oil pressure problems. For me that is 5-30....now I have to decide do I want dino-oil or synthetic? Well for someone who drives their car hard (like me) synthetic is a safer choice. It cools better, has a much higher flash point and when it flashes it turns to ash. Once the ash comes into contact with fresh oil it immediatly turns back into oil. Can't do that with dino-oil. So now I've decided the weight and type of oil. I have to chose the brand. I chose Royal Purple, because I've researched them and used them before. RP is 100% man made and contains a special friction and heat reducer to help pull the heat away from the motor. Anytime you pull heat and friciton from a motor you help it. Also, RP has a HP guarantee. I worked out their formula and for a MSP using RP should yield 7hp. On a P5 or similar protege it should yield 4hp. Also with RP I'm able to extend my service intervals. Regular oil should be changed at 3K or sooner, synthetic is 5K or sooner, RP is 6K or later. Since I'm not broke and I value the performance and longevity of my vehicular investment I don't mind spending a little more on something that is so crucial to it's operation.
Mobil1 is good oil also, just not my favorite.
Without a before dyno, you're numbers are worthless. Your certs don't mean much to me, just about as enlightened as any goofy kid that went to UTI...Turbo Matty P said:I don't have a before dyno, but I have an after on my MSP. I put down more power at the wheels than mazda claimed on the motor...this was with just a cone filter on the MAF, my catless downpipe and the oil. Either my downpipe created 20+whp or the oil helped a little.
p.s. there was no difference in power between the cone filter and stock airbox...just noise.
p.p.s. I live in Alabama...I can get away with 5w-30 in every vehicle I own YEAR ROUND. Like choipstick hero pointed out 5-30 is for NEWER CARS.
p.p.p.s. I'm sorry I assumed I was more qualified to answer this. I guess my 3 ASE certifications, valvoline oil tech certification and mitsubishi tech training aren't enough to deliver a "professional" opinion on here.
Thanks for the name drop.Turbo Matty P said:yeah I guess you can't use every other MSP's stock dyno....we know how different they all are....
FWIW, this summer I'm re-enrolling into VC's "Hot Rod U" and "Tuner" programs. VC is now owned and run by the president of Wyotech.