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Switched to synthetic oil and have a question. #1811958 04/25/15 11:17 PM 04/25/15 11:17 PM
Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi... MidPenMopar OP Looking for fun? Keep looking
MidPenMopar OP Looking for fun? Keep looking Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi...	I just switched over using from conventional Chevron brand motor oil in the road runner to 20w/50w Royal Purple's full synthetic type as I got a good deal on some. So I drove the road runner about 20 miles and then rechecked the oil and went from a nice clean color to really dark color in that short amount of usage. Just wondering if this normal when switching to a full synthetic? Thanks Stu

Re: Switched to synthetic oil and have a question. [Re: MidPenMopar] #1812046 04/26/15 12:32 AM 04/26/15 12:32 AM
Joined: May 2003 Posts: 6,560 Downtown Roebuck Ont Twostick Still wishing...
Twostick Still wishing... Joined: May 2003 Posts: 6,560 Downtown Roebuck Ont	That's not been my experience but I use Mobil 1 and I have only switched over modern EFI engines. I haven't switched a carb'ed engine. Kevin

Re: Switched to synthetic oil and have a question. [Re: Twostick] #1812060 04/26/15 12:46 AM 04/26/15 12:46 AM
Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi... MidPenMopar OP Looking for fun? Keep looking
MidPenMopar OP Looking for fun? Keep looking Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi...	Maybe it grabbed all the dirt of the internals right away?? That was my first thought?

Re: Switched to synthetic oil and have a question. [Re: MidPenMopar] #1812062 04/26/15 12:50 AM 04/26/15 12:50 AM
Joined: Nov 2007 Posts: 21,819 Kirkland, Washington Pacnorthcuda Too Many Posts
Pacnorthcuda Too Many Posts Joined: Nov 2007 Posts: 21,819 Kirkland, Washington	Originally Posted By MidPenMopar Maybe it grabbed all the dirt of the internals right away?? That was my first thought? That's likely exactly what happened. Your new oil probably has more/different detergents than your previous oil.

Re: Switched to synthetic oil and have a question. [Re: MidPenMopar] #1812063 04/26/15 12:51 AM 04/26/15 12:51 AM
Joined: Apr 2012 Posts: 18,880 - R RSNOMO Moparts Torchbearer
RSNOMO Moparts Torchbearer R Joined: Apr 2012 Posts: 18,880 -	Originally Posted By MidPenMopar Maybe How'd yer 'old' oil look???

Re: Switched to synthetic oil and have a question. [Re: RSNOMO] #1812075 04/26/15 01:12 AM 04/26/15 01:12 AM
Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi... MidPenMopar OP Looking for fun? Keep looking
MidPenMopar OP Looking for fun? Keep looking Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi...	Originally Posted By RS23U1G Originally Posted By MidPenMopar Maybe How'd yer 'old' oil look??? I always change the oil once a year and as usual it was just getting sort of dirty looking. Usually it stays pretty clean for most of the year. I would guess i put on about maybe 1000 miles to 1500 miles between oil changes.

Re: Switched to synthetic oil and have a question. [Re: MidPenMopar] #1812128 04/26/15 04:38 AM 04/26/15 04:38 AM
Joined: Dec 2006 Posts: 377 Riverside, California G ghostrider enthusiast
ghostrider enthusiast G Joined: Dec 2006 Posts: 377 Riverside, California	I know Mobile1 does that real quick in lots of engines, not sure about RP. Must remember... my humor doesn't work on forums.....my humor doesn't work on forums. Former Mopars include 69 Super Bee, 71 Sebring, 68 Charger, 69 Charger, 78 D150, 67 300, 71 Road Runner clone, 79 T-top Doba, 67 Barracuda, 91 TC by Maserati, 68 Town & Country

Re: Switched to synthetic oil and have a question. [Re: ghostrider] #1812159 04/26/15 09:41 AM 04/26/15 09:41 AM
Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi... MidPenMopar OP Looking for fun? Keep looking
MidPenMopar OP Looking for fun? Keep looking Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi...	Originally Posted By ghostrider I know Mobile1 does that real quick in lots of engines, not sure about RP. So this is normal i guess? Wonder if i should change it again right away if its full of contaminates now?

Re: Switched to synthetic oil and have a question. [Re: MidPenMopar] #1812169 04/26/15 10:06 AM 04/26/15 10:06 AM
Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio Challenger 1 Too Many Posts
Challenger 1 Too Many Posts Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio	Originally Posted By MidPenMopar Originally Posted By ghostrider I know Mobile1 does that real quick in lots of engines, not sure about RP. So this is normal i guess? Wonder if i should change it again right away if its full of contaminates now? I wouldn't. Also if you change it every year at approximately 1500 miles, then synthetic is a waste of money for you. Use regular oil or extend your oil changes to like 7500 miles to make synthetic worth while. IMO

Re: Switched to synthetic oil and have a question. [Re: Challenger 1] #1812180 04/26/15 10:26 AM 04/26/15 10:26 AM
Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi... MidPenMopar OP Looking for fun? Keep looking
MidPenMopar OP Looking for fun? Keep looking Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi...	I only used the Royal Purple as i got a deal on it from a friend so it was going to be the same cost as regular. The car sits so much that i feel changing the oil every year is worth the few $$.

Re: Switched to synthetic oil and have a question. [Re: MidPenMopar] #1812321 04/26/15 02:33 PM 04/26/15 02:33 PM
Joined: Apr 2015 Posts: 114 Oregon W Wagonman1967 member
Wagonman1967 member W Joined: Apr 2015 Posts: 114 Oregon	Isint that Royal Purple uh Purple? IIRC it is dark to begin with. 1968 Bronze Metalic Road Runner !967 Malibu Wagon Original 4sd w/air 2001 Dodge Ram 4wd 1985 GMC K1500 4in lift 1993 Honda Civic W 350k Beater 2003 Honda VTX 1800 Bagger

Re: Switched to synthetic oil and have a question. [Re: MidPenMopar] #1812344 04/26/15 03:14 PM 04/26/15 03:14 PM
Joined: Feb 2003 Posts: 8,670 A Andrewh master
Andrewh master A Joined: Feb 2003 Posts: 8,670	I remember royal purple didn't stay purple for long. been a while though. I also agree. I change my oil once a year too. 30 bucks in oil and filters once a year is cheap insurance, for as little as I drive mine. I wouldn't worry about changing it early just for a color change. oil sample tests are as expensive as a change, so I probably wouldn't bother with that either.

Re: Switched to synthetic oil and have a question. [Re: Challenger 1] #1812351 04/26/15 03:33 PM 04/26/15 03:33 PM
Joined: Apr 2012 Posts: 18,880 - R RSNOMO Moparts Torchbearer
RSNOMO Moparts Torchbearer R Joined: Apr 2012 Posts: 18,880 -	Quote: Also if you change it every year at approximately 1500 miles, then synthetic is a waste of money for you. Use regular oil or extend your oil changes to like 7500 miles to make synthetic worth while. IMO Agreed...

Re: Switched to synthetic oil and have a question. [Re: MidPenMopar] #1812359 04/26/15 03:53 PM 04/26/15 03:53 PM
Joined: Dec 2014 Posts: 2 California High Desert O old chief member
old chief member O Joined: Dec 2014 Posts: 2 California High Desert	I would be real careful using Synthetic in old muscle cars with flat tappet cams. Flat tappet cams REQUIRE an oil with Zinc in it. You really need a racing oil with Zinc, for instance, VR1 Valvoline, or Amsoil Dominator racing oil, Joe Gibbs racing oil. They have taken all the Zinc out of oils because it plugs up Catalytic Converters. I learned the hard way. At least put an additive with Zinc in it.

Re: Switched to synthetic oil and have a question. [Re: old chief] #1812364 04/26/15 04:05 PM 04/26/15 04:05 PM
Joined: Mar 2013 Posts: 571 Spring Hill Fl 65Fury440 mopar
65Fury440 mopar Joined: Mar 2013 Posts: 571 Spring Hill Fl	Originally Posted By old chief I would be real careful using Synthetic in old muscle cars with flat tappet cams. Flat tappet cams REQUIRE an oil with Zinc in it. You really need a racing oil with Zinc, for instance, VR1 Valvoline, or Amsoil Dominator racing oil, Joe Gibbs racing oil. They have taken all the Zinc out of oils because it plugs up Catalytic Converters. I learned the hard way. At least put an additive with Zinc in it. This might be an interesting read. https://540ratblog.wordpress.com/

Re: Switched to synthetic oil and have a question. [Re: old chief] #1812371 04/26/15 04:21 PM 04/26/15 04:21 PM
Joined: Jan 2003 Posts: 27,465 So Cal autoxcuda Too Many Posts
autoxcuda Too Many Posts Joined: Jan 2003 Posts: 27,465 So Cal	Originally Posted By old chief I would be real careful using Synthetic in old muscle cars with flat tappet cams. Flat tappet cams REQUIRE an oil with Zinc in it. You really need a racing oil with Zinc, for instance, VR1 Valvoline, or , Joe Gibbs racing oil. They have taken all the Zinc out of oils because it plugs up Catalytic Converters. I learned the hard way. At least put an additive with Zinc in it. There are synthetic oils that have high anti-scuff additives (zddp/zinc or others). "Amsoil Dominator racing oil, Joe Gibbs racing oil." are synthetic.

Re: Switched to synthetic oil and have a question. [Re: 65Fury440] #1812575 04/26/15 10:05 PM 04/26/15 10:05 PM
Joined: Mar 2005 Posts: 3,138 Central NC gch master
gch master Joined: Mar 2005 Posts: 3,138 Central NC	Originally Posted By 65Fury440 Originally Posted By old chief I would be real careful using Synthetic in old muscle cars with flat tappet cams. Flat tappet cams REQUIRE an oil with Zinc in it. You really need a racing oil with Zinc, for instance, VR1 Valvoline, or Amsoil Dominator racing oil, Joe Gibbs racing oil. They have taken all the Zinc out of oils because it plugs up Catalytic Converters. I learned the hard way. At least put an additive with Zinc in it. This might be an interesting read. https://540ratblog.wordpress.com/ Big thread on this guy on the corvette forum.Film strength test being taken as gospel without wear and other factors taken into consideration.One guy chellenges him pretty strongly.I will provide a link if anyone is interested.

Re: Switched to synthetic oil and have a question. [Re: gch] #1812616 04/26/15 10:48 PM 04/26/15 10:48 PM
Joined: Apr 2012 Posts: 18,880 - R RSNOMO Moparts Torchbearer
RSNOMO Moparts Torchbearer R Joined: Apr 2012 Posts: 18,880 -	Quote: Film strength test being taken as gospel without wear and other factors taken into consideration. Superior heat protection, no doubt... But, regarding viscosity, I'm on the fence...

Re: Switched to synthetic oil and have a question. [Re: RSNOMO] #1812746 04/27/15 12:21 AM 04/27/15 12:21 AM
Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi... MidPenMopar OP Looking for fun? Keep looking
MidPenMopar OP Looking for fun? Keep looking Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi...	The Royal Purple oil i used has the added ZINC in it.

Re: Switched to synthetic oil and have a question. [Re: MidPenMopar] #1812757 04/27/15 12:30 AM 04/27/15 12:30 AM
Joined: Sep 2008 Posts: 52 Texas S shart70rt member
shart70rt member S Joined: Sep 2008 Posts: 52 Texas	Change the filter and add a quart. Using a high quality filter helps extend the life of synthetics, but you are not doing many miles anyway. 70 Go Mango Charger RT White Vinyl Top 18 Spline 4 speed Lakewood Scatter Shield/ Centerforce DF Clutch, Hydraulic bearing 505 Stroker, dual 600's, hyd roller cam - 525 hp, 640 torque

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