Well here's the deal I have a case of royal purple 10-30 and possibly unlimited free access to more is there any dis advantages vs running the 5-30 that I usually run?
oil weights
- Thread starter bakers4v4_6
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Using that lubricant in temperatures of 32*F or higher will yield no ill benefits. I honestly prefer a true synthetic 10W-30 to a refined petroleum base stock 5W-30, especially in warm/hot weather.
If you were starting the car in sub 32*F weather more than once a day, and for many months of the year. I'd prefer a robust 0W-30 weight myself. You will do fine with Royal Purple 10W-30 in the spring, summer, and fall months. Do you store the car in the winter, or drive it year round?
If you were starting the car in sub 32*F weather more than once a day, and for many months of the year. I'd prefer a robust 0W-30 weight myself. You will do fine with Royal Purple 10W-30 in the spring, summer, and fall months. Do you store the car in the winter, or drive it year round?
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Stored winters and rarely drove in summers... Now what about 03 cobras I hear they take 5-20 any dis advantages in running 10-30 there?
If you have a free everlasting supply of Royal Purple 10W-30, USE IT! Even better if you tell me it's the older API SL formulation, or the newer HPS.
Why 10W-30?
Why 10W-30?
We run royal purple in all our equipment at work all types of weights in 55 gal drums and cases so they don't mind my one oil change a year.. I ended up getting a dealer discount on 5 30 @ advanced thru a friend but its good to know I can run 10 30 thanks
RP 10w30 is a good choice for a Terminator.
Thanks UB and Sid. I'll be using the HPS 10W30 in the Cobra now. Any ill effects on cams, say Crower Stage 3's?
HPS 10W-30 is an excellent formulation. Use it with confidence.
HPS is extremely robust.
Can Royal purple HPS harm the emissions system in my stock 2012 GT? Why does ford reccomend 5w-20 for most weather conditions when all the enthusiasts on this forum and one's similar to it with any knowledge in oil viscosity advise against it?
:shrug:
CAFE laws, and no other reason. The bean counter want to pay less fines to the federal government.
Royal Purple HPS is a true synthetic base stock which naturally has a lower NOACK Volatility (evaporation/burn off). It evaporates 50% less than Motorcraft 5W-20, so what means having a higher level of ZDDP (Zinc and Phosphorous) will not be any more detrimental to your cats than Motorcraft 5W-20 with lower levels of ZDDP.
Phosphorous is poisonous to catalysts.
I have had these questions lurking in my head for years, thanks so much for answering them. What a relief to finally have answers!
:banana:
There has been a debate with the API (American Petroleum Institute) to take into consideration NOACK Volatility when determining maximum ZDDP ppm in a lubricants formulation. It makes perfect sense, however....since the API is biased on large oil companies using lesser base stocks that have higher NOACK, the argument falls on deaf ears.
aka politics
TROOF! Those who have the most money have the most influence.
I thought the inclusion of those 2 elements was more important during the new engine break in period? Benefits?
During break in, I believe most experts would agree with you. After break in, it's still a debate. I'm testing/studying this currently.
Results to come in the next few months.
Yup especially for flat tappet cams..
Correct, for high pressure surface to surface contact. The debate is, newer engines do not have as high of pressure in similar areas, therefore....higher levels of ZDDP are not required.
A 10w-30 tends to stay in grade longer than a 5w-30 due to less viscosity improvers added to lessen oil thinning.
If you have an unlimited supply I would say go for it. Beast has already filled you in on the politics involved.
If it's the hps stuff or contains "synerlac" then you have really scored.
If you have an unlimited supply I would say go for it. Beast has already filled you in on the politics involved.
If it's the hps stuff or contains "synerlac" then you have really scored.
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