mikeal1892 Posted March 30, 2006 Report Share Posted March 30, 2006 I was wondering if anyone uses Royal Purple Oil ? Michael Link to comment Share on other sites More sharing options...
mhinchley Posted March 30, 2006 Report Share Posted March 30, 2006 I don't, but I do use synthetic in all my cars. If 100 percent syn, all about the same. Link to comment Share on other sites More sharing options...
mikeal1892 Posted March 30, 2006 Author Report Share Posted March 30, 2006 I don't, but I do use synthetic in all my cars. If 100 percent syn, all about the same. What brand might you be using ? Do you think theres really a benfit ? I've used it in many cars and done alot of reading my car has 100k on it now and lo leaks and it does not burn or use any oil. Michael Link to comment Share on other sites More sharing options...
KHE Posted March 30, 2006 Report Share Posted March 30, 2006 There's no real benefit to using synethetics in these cars as they were designed and validated on regular motor oil. Many people have a personal preference to use synethetics - that's fine but realize that it is not necessary. What is Royal Purple oil anyway????? Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
JimHare Posted March 30, 2006 Report Share Posted March 30, 2006 There's no real benefit to using synethetics in these cars as they were designed and validated on regular motor oil. Many people have a personal preference to use synethetics - that's fine but realize that it is not necessary. What is Royal Purple oil anyway????? Soon after I got my 99 Deville, I read somewhere that Royal Purple was highly regarded among Northstar engine users - So I searched it out and bought a bunch of it. It seemed to make the engine just a teeny bit quieter (if that's possible) but I didn't know enough about these cars to check anything else. After I learned, when it ran out I went back to regular Dino oil. Haven't used anything else since then. RP was a bit pricey, if I remember. "For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled." - Richard P. Feynman Link to comment Share on other sites More sharing options...
Nikolai Posted March 30, 2006 Report Share Posted March 30, 2006 RP is expensive. I'm running Mobil 1 right now, and I can tell the difference from the cheap dino stuff the guy I bought it from had in it. Before it was a little unresponsive, now it's great, I even see 6,000 RPM WOT where as before it never did. Link to comment Share on other sites More sharing options...
mikeal1892 Posted March 30, 2006 Author Report Share Posted March 30, 2006 Well on my Moblie One bottle it talkes about how its used oem in the new model caddys. At one time I thought on the older northstars it that it was put in them new? And its much thicker so I've always felt it would last longer, and would not break down as easy.From time to time I ad Lucas Oil stablizer. I take care of everything like its going to be mylast. May be someday I'll change my mind. Just with the head gasket issues and everything thats why I try to buy the best. Is there something I should add to the coolant as well ? Michael Link to comment Share on other sites More sharing options...
Nikolai Posted March 31, 2006 Report Share Posted March 31, 2006 Just normal maintainence is fine. I used synthetic because I push mine harder than anyone else here I think. Well, besides Mark I think. Link to comment Share on other sites More sharing options...
JohnnyG Posted March 31, 2006 Report Share Posted March 31, 2006 Royal Purple is not API Certified (no starburst) and there is a reason for that. They do not choose to follow API specs in their additive package. Nor do they choose to submit their oil for testing since it costs money and "locks" them in to a set of standards. To you this means that they could care less if your CAT takes a dump at 100,000 miles. API oils conform to standards that have been designed and (what was the term bbob used) VALIDATED by auto manuacturers in the US. RP has higher amounts of ZDDP than required by the SM standard as a substitute for good base oils. The term "synthetic" has now become very subjective, and many oils could carry that name if they chose to. Save your money. Never underestimate the amount of a persons greed. Link to comment Share on other sites More sharing options...
BodybyFisher Posted March 31, 2006 Report Share Posted March 31, 2006 You know one of the most passionate discussions we have is about oil and synthetic oil. See Ranger's reaction to a member on the other site asking what is the BEST oil, http://www.cadillacforums.com/forums/north...light=synthetic The guru used to say that it was overkill that we would never reap the benefits of using synthetic oils. Furthermore unless you are living in Phoenix or Alaska with temperature extremes its unnecessary. In spite of that we continually have members that 1) feel that if they spend more money, that equates to better or 'best'. 2) have members that feel that, their driving habits, warrant synthetic oils 3) have members that only want the best for their 'baby'. 4) have members that think that man made is better than refined oil and that they can feel the difference I have a few problems with synthetic oil. Oil's worst enemy is short trips where the oil doesn't get hot enough to burn out impurities (gas, combustion by-products, moisture from condensation, etc). Because synthetic does not break down, the oil change interval is extended. Some have said that it can last 15,000 miles, with a filter change. If you are taking short trips, and if the impurities are not burned out, is keeping the synthetic oil in a potential problem? How much sense does it make to spend 5 times the cost to change the oil if you change it at the same interval because of short trips anyway? Why not get extreme as some do and just change it every 3,000 miles and use standard oil (which is also a waste unless you are doing short trips). I am a big fan of the Oil Life Monitor, and would not be happy overriding it with synthetic oil, if I were to use it. This subject is beat up over and over. Heck there is even a site dedicated to oil http://www.bobistheoilguy.com/ I suppose that this discussion is much like what is the best wax, best tires, best hard drives, best computer (apple or PC), best CPU (AMD or INTEL), best BEER, best car (FORD, CHEVY or MOPAR), best fast food (McD or BK), best basketball (spalding or Wilson) and so on and so on.. The short of it, people are going to use what they are going to use, regardless. Here are a few discussions from cadillacforums that I have found on synthetic oil that I found interesting: http://www.cadillacforums.com/forums/north...light=synthetic http://www.cadillacforums.com/forums/north...light=synthetic http://www.cadillacforums.com/forums/north...light=synthetic http://www.cadillacforums.com/forums/north...light=synthetic I especially found this post interesting, I will be changing from 5W to 10W this weekend making sure that the oil I use has the correct API Certification: http://www.cadillacforums.com/forums/north...-northstar.html Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
mikeal1892 Posted March 31, 2006 Author Report Share Posted March 31, 2006 There's no real benefit to using synethetics in these cars as they were designed and validated on regular motor oil. Many people have a personal preference to use synethetics - that's fine but realize that it is not necessary. What is Royal Purple oil anyway????? Soon after I got my 99 Deville, I read somewhere that Royal Purple was highly regarded among Northstar engine users - So I searched it out and bought a bunch of it. It seemed to make the engine just a teeny bit quieter (if that's possible) but I didn't know enough about these cars to check anything else. After I learned, when it ran out I went back to regular Dino oil. Haven't used anything else since then. RP was a bit pricey, if I remember. Thank- you for your feed back ! thats what I was hopeing to hear . Michael You know one of the most passionate discussions we have is about oil and synthetic oil. See Ranger's reaction to a member on the other site asking what is the BEST oil, http://www.cadillacforums.com/forums/north...light=synthetic The guru used to say that it was overkill that we would never reap the benefits of using synthetic oils. Furthermore unless you are living in Phoenix or Alaska with temperature extremes its unnecessary. In spite of that we continually have members that 1) feel that if they spend more money, that equates to better or 'best'. 2) have members that feel that, their driving habits, warrant synthetic oils 3) have members that only want the best for their 'baby'. 4) have members that think that man made is better than refined oil and that they can feel the difference I have a few problems with synthetic oil. Oil's worst enemy is short trips where the oil doesn't get hot enough to burn out impurities (gas, combustion by-products, moisture from condensation, etc). Because synthetic does not break down, the oil change interval is extended. Some have said that it can last 15,000 miles, with a filter change. If you are taking short trips, and if the impurities are not burned out, is keeping the synthetic oil in a potential problem? How much sense does it make to spend 5 times the cost to change the oil if you change it at the same interval because of short trips anyway? Why not get extreme as some do and just change it every 3,000 miles and use standard oil (which is also a waste unless you are doing short trips). I am a big fan of the Oil Life Monitor, and would not be happy overriding it with synthetic oil, if I were to use it. This subject is beat up over and over. Heck there is even a site dedicated to oil http://www.bobistheoilguy.com/ I suppose that this discussion is much like what is the best wax, best tires, best hard drives, best computer (apple or PC), best CPU (AMD or INTEL), best BEER, best car (FORD, CHEVY or MOPAR), best fast food (McD or BK), best basketball (spalding or Wilson) and so on and so on.. The short of it, people are going to use what they are going to use, regardless. Here are a few discussions from cadillacforums that I have found on synthetic oil that I found interesting: http://www.cadillacforums.com/forums/north...light=synthetic http://www.cadillacforums.com/forums/north...light=synthetic http://www.cadillacforums.com/forums/north...light=synthetic http://www.cadillacforums.com/forums/north...light=synthetic I especially found this post interesting, I will be changing from 5W to 10W this weekend making sure that the oil I use has the correct API Certification: http://www.cadillacforums.com/forums/north...-northstar.html Lots of info ! Thanx Mike ! Michael - Link to comment Share on other sites More sharing options...
mikeal1892 Posted April 1, 2006 Author Report Share Posted April 1, 2006 I did more research! I wouldnt even have it now. Mobil one synthic was 3rd and royal purple was 7th out of 10 ! Link to comment Share on other sites More sharing options...
BodybyFisher Posted April 1, 2006 Report Share Posted April 1, 2006 Where did you research, bob's oil? There is some interesting information on that site.. Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
mikeal1892 Posted April 1, 2006 Author Report Share Posted April 1, 2006 Where did you research, bob's oil? There is some interesting information on that site.. I dont know a freind looked it up and he was telling me Amsoil was 1st though. I havent looked at bobs site yet. Michael Link to comment Share on other sites More sharing options...
KHE Posted April 1, 2006 Report Share Posted April 1, 2006 Am-scam...er..Amsoil got no.1??? I would disregard that source of information.... Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
BodybyFisher Posted April 1, 2006 Report Share Posted April 1, 2006 I am always amazed by this test on the Northstar, this was posted by the guru a long time ago: The NS high speed endurance engines run for almost 300 hours are continuous full throttle, max load, max RPM. No idling, no part throttle...just flat out running. I have often, of late, seen a SC Northstar or LS7 in the dyno cell at full load/6500 RPM screaming away when I left for the day and it was sitting there, still screaming away the next morning when you come into work...and this happens day after day to accumulate 300 hours. 300 hours at FULL TROTTLE... Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
mikeal1892 Posted April 1, 2006 Author Report Share Posted April 1, 2006 Am-scam...er..Amsoil got no.1??? I would disregard that source of information.... HEHE, yes i know.....lol Michael Link to comment Share on other sites More sharing options...
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