5w-50 oils

[me32]

No new test here but I did want to report that I found 6 quarts of Pennzoil Platinum 5w-50 for $44.99 (included shipping) on amazon (or was it ebay :shrug. I am planning to add an additional .5 quarts of MotorCraft that I have left over from the last change.

What do you think of this? Will it skew the test results? I plan to do the change next weekend so maybe you'll change my mind:??:

DaFreak

you should be good to use, but will slighty give a different result when tested only cause they might have different additives in it.

I sent my factory fill out to Blackstone, just waiting on the details. When they send me a new kit, I'll send out some virgin Red Line.

thanks, an sounds good

I sent a virgin sample of the Motorcraft 5W50 into Blackstone last week. I will post the report once I receive it.

that sounds great too.

Thanks guys for doing the leg work for many of us.

I just picked up a 2011 to replace my 2009, and so I wanted to check in here again to see what sort of new information there was on these cars.

Knowing I'll be changing the oil again soon for the post break-in this thread is good timing.

I was going to have the dealer just put in their motorcraft stuff, but perhaps now I'll go with Castrol or Amsoil.

glad we can help out

 

[6-Speed]

Okay I ordered the Mobil 1 5w-50 to test it. I don't think it will be too bad as they recommend it in the Mercedes SLR supercharged engine and like I said the UOA's came back very good. I'll post my results after using it.

Are you getting any closer to having the Mobile 1 5W50 tested? From what I can tell from VOAs and their spec sheets, it looks like an excellent oil. And the UOA from a Porsche Cayman looked good too. I am considering switching to M1, but would like to see a UOA of the oil sampled from a GT500 to see how it performs in our cars. :beer:

 

[6-Speed]

Tell me where and how to send a sample and I'll send off my Redline oil

Did you ever send in a sample of the Red Line for a UOA?

 

[6-Speed]

I noticed the most recent Castrol Syntec PDS no longer claims Ford WSS-M2C931-B approval for their 5W50 oil.

http://www.castrol.com/liveassets/b...local_assets/downloads/p,q/pds_syntec_usa.pdf

 

[UnleashedBeast]

I noticed the most recent Castrol Syntec PDS no longer claims Ford WSS-M2C931-B approval for their 5W50 oil.

http://www.castrol.com/liveassets/b...local_assets/downloads/p,q/pds_syntec_usa.pdf

Hmm, it's not even on the list. I wonder if this is an oversight.

 

[6-Speed]

Hmm, it's not even on the list. I wonder if this is an oversight.

Dunno ... I looked at a bottle of Syntec 5W50 API SM oil today at O'Reilly's and the label still lists Ford WSS-M2C931-A (not B), plus it was $8.19 per quart. The latest PDS is for the new SN oil.

 

[parshal]

I spoke with Castrol today and they said they no longer have an oil that meets Ford spec WSS-M2C931-B. Syntec has been replaced with Edge with Syntec and it does not meet the spec.

 

[UnleashedBeast]

I spoke with Castrol today and they said they no longer have an oil that meets Ford spec WSS-M2C931-B. Syntec has been replaced with Edge with Syntec and it does not meet the spec.

It probably doesn't meet the spec due to greater than 800 ppm of phosphorous, but I haven't seen any new Castrol 5W-50 VOAs to confirm.

 

[gr850]

I spoke with Castrol today and they said they no longer have an oil that meets Ford spec WSS-M2C931-B. Syntec has been replaced with Edge with Syntec and it does not meet the spec.

I just changed my 2011 with 1500 on the odometer to Castrol 5W50 edge/syntech. I'm not overly concerned by this statement.......well, just a little. Castrol was the only 5W50 I could find around here. I wanted Amsoil but I didn't see where they offered 5W50.

I thought what counted was the API rating?

 

[parshal]

The guy at Castrol says the 5w-50 is designed for classic cars and is high in zinc. It also says so on the bottle.

 

[gr850]

The guy at Castrol says the 5w-50 is designed for classic cars and is high in zinc. It also says so on the bottle.

Thats not saying much as I consider that more of a marketing gimick. I'm no oilologist by any means. For all I know zinc is a good thing. My car won't catch a cold then:banana:

Seriously, I doubt if it's a major issue but I'd still be interested in knowing the details about the specs. Both castrol and motorcraft are API SM. Stuff was $9 a qt.

 

[Dandy]

Does anyone have any experience with Scheaffer's 5W-50 full synt race oil? I know a lot of dirt track guys in my area swear by it, but has anyone ran it in their cars? Also, I am having a hard time buying 6 gallons of an oil that I am not 100% sure meets the WSS-M2C931-B spec... Its either this or the Redline, but I can get Scheaffer's considerably cheaper. Does anyone have the proof that their 5W-50 meets Ford's spec?

 

[parshal]

Seriously, I doubt if it's a major issue but I'd still be interested in knowing the details about the specs. Both castrol and motorcraft are API SM. Stuff was $9 a qt.

It was the syntec that met the ford spec and sm. Castrol edge with syntec meets neither.

 

[Shaker1]

So, at this point what 5w50 oils meet the Ford spec and which looks best based on oil analysis?

 

[UnleashedBeast]

Does anyone have any experience with Scheaffer's 5W-50 full synt race oil? I know a lot of dirt track guys in my area swear by it, but has anyone ran it in their cars? Also, I am having a hard time buying 6 gallons of an oil that I am not 100% sure meets the WSS-M2C931-B spec... Its either this or the Redline, but I can get Scheaffer's considerably cheaper. Does anyone have the proof that their 5W-50 meets Ford's spec?

It does not carry Ford's specification. Another thing I have experienced with true synthetic 50 grade lubricants like Red Line 5W-50 and Amsoil 20W-50. Since they do not shear like cheaper 5W-20 formulations, they stay in the higher viscosity ranges. This will make your engine have poor efficiency, noticeable starter strain on cold starts, and excessive oil pressures. I am not the only person to complain about reduced fuel mileage and starter lag from a 50 grade lubricant. Motorcraft 5W-50 will respond the same way when it is fresh. Does anyone notice that a fresh fill of MC 5W-50 will yield lower mpg than the same oil fill does after 2,000 miles of use?

So, at this point what 5w50 oils meet the Ford spec and which looks best based on oil analysis?

The only one that meets the spec is Motorcraft 5W-50. Why use it? There are much better options.

Please, before anyone responds to this saying, "Because I want to make sure my warranty is 100%"......look at your mods list first. Most people have a smaller pulley, and an aftermarket tune. Those have 100 times more potential to cause engine damage than not using an engine lubricant with a spec that is useless, and specific to Ford.

 

[GT50008]

I just changed my 2011 with 1500 on the odometer to Castrol 5W50 edge/syntech. I'm not overly concerned by this statement.......well, just a little. Castrol was the only 5W50 I could find around here. I wanted Amsoil but I didn't see where they offered 5W50.

I thought what counted was the API rating?

I just bought Castrol 5W50 Edge/syntech. I am not concerned that it does not meet the ford spec. I am pleased to find out that they changed their formulation to increase anti-wear properties with more zinc/phosphorous. I was about to change from the "old" ford spec castrol forumula anyways.

 

[UnleashedBeast]

I thought what counted was the API rating?

In my opinion, it's more important that Ford's spec, but at the same time not as important to me. Allow me to explain.

Not many top tier true synthetics actually carry an API certification for two primary reasons.

1. Forced to limit phosphorous @ 800 ppm max.

2. Different rules for true synthetic make it more expensive to certify them when compared to the cost of conventional petroleum oils.

Just because a lubricant doesn't have an API starburst logo on it doesn't mean it's a lesser lubricant than one that does.

 

[jcthorne]

My GT500 WAS the only engine in our fleet NOT running Rotella T6 5W40 synthetic. Now that motorcraft is the only one left on the market to meet spec and it is not a real 50w....I used up the last of the Red Line I bought on my last oil change and went with the Rotella this time. Its held up very well in all the other engines we have and gets reall good results in other performance cars. I have several UOA from the Rotella in several vehicles and and stationary engines. Have been very pleased with the results. Will run a UOA on this at 5k miles just to make sure things are going well and will keep an eye on things. So far, with about 100 miles in 110deg heat.....its doing fine and seems to show about the same oil pressures as the Red Line. I'll report back but expect no trouble. I'll also watch the pcv line catch can as that was a problem with motorcraft and castrol.

I posted this mostly because I have not seen any others running this oil in the GT500 even though its a very popular choice in many other enthusiast forums from Harley, EVO, GTR and of course the diesel boys. Its readily available and compartivly cheap. I also always have a case of gallons on hand.

 

[UnleashedBeast]

Thanks JC,

You are correct about it being very popular in the performance world. BITOG members hold Rotella T6 5W-40 in high regards, and does return good UOAs.

Paying close attention to vaporized oil blow by in the catch can is a good idea. IMO, it should be about the same amounts as MC and Castrol 5W-50, as they both have close to the same NOACK.

Eager to see your UOA on it, and thanks for the future contribution.

 

[me32]

My GT500 WAS the only engine in our fleet NOT running Rotella T6 5W40 synthetic. Now that motorcraft is the only one left on the market to meet spec and it is not a real 50w....I used up the last of the Red Line I bought on my last oil change and went with the Rotella this time. Its held up very well in all the other engines we have and gets reall good results in other performance cars. I have several UOA from the Rotella in several vehicles and and stationary engines. Have been very pleased with the results. Will run a UOA on this at 5k miles just to make sure things are going well and will keep an eye on things. So far, with about 100 miles in 110deg heat.....its doing fine and seems to show about the same oil pressures as the Red Line. I'll report back but expect no trouble. I'll also watch the pcv line catch can as that was a problem with motorcraft and castrol.

I posted this mostly because I have not seen any others running this oil in the GT500 even though its a very popular choice in many other enthusiast forums from Harley, EVO, GTR and of course the diesel boys. Its readily available and compartivly cheap. I also always have a case of gallons on hand.

Gonna be waiting to see this. As after my last amount of valoline is gone I plan to switch over to rotella.