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Originally Posted By: Quattro Pete Originally Posted By: 07GT500 I just want to make sure I can mix the 2 without creating a messed up oil and end up having engine problems... Short answer: yes, you can. Thank you Quattro Pete, sorry again for offending you...you will not see me POST on here...

All what I'm trying to get to here is...is it safe to blend Mobil 0W-40 (SM) with a 5W-50 (SN) I can't find any 40 in (SN) in my part of the country for some reason, after all the research I've done I did notice that both oils (Mobil) are carbon copy for add pack side of things except for...

Here 's where I got my info, unless UnleashedBeast is a liar I have a lot of respect for all the knowledge and info he's posted on many Forums and has a lot of back-up for all he claims... http://www.svtperformance.com/forums/201...ens-here-2.html Go to post #37 Quoted by;UnleashedBeast...

Originally Posted By: aquariuscsm If price is no object,there`s always Eneos or Mobil 1 Racing 0W50. Availability is the biggest problem, I want Mobil product easy to get locally... Originally Posted By: supercity Originally Posted By: 07GT500 both of these Mobil are group IV PAO base with...

I find the 50 weight to heavy and the 40 shearing on the lighter end of the scale heavy 30 to a light 40 so I was thinking of BLENDING 50/50 to acheive a heavy 40 shearing to a MEDIUM 40, both of these Mobil are group IV PAO base with nearly identical ADD packs...

Originally Posted By: 07GT500 Our CT has Mobil 1 0W-40 which you can use for street driving and the odd BURST! it's the one I'll be running this season...

Ours has Mobil 1 0W-40 which you can use for street driving and the BURST! it's the I'll be running this season...

I'm switching from Mobil 1 5W-50 recommended by Ford to their 0W-40 both oils are carbon copy in add packs except for VISCOUSITY...my 5.4L Supercharged is never abused tracked or raced except for the odd launch comming on a highway ramp or a RICER challenging me and I get !@#$ off and I like to...

here's info and specs on 5W-50 Quaker State... http://www.epc.shell.com/Docs/GPCDOC_X_cbe_24855_key_140003587115_201007020127.pdf

Originally Posted By: OVERKILL Originally Posted By: 07GT500 Originally Posted By: OVERKILLnew "C" SPEC... This may be more recent: http://quakerstate.com/#/motor-oil/ultimate-durability It is the "B" spec. It is interesting to note that on the Quaker State Ultimate Durability PDS for the...

Originally Posted By: OVERKILLnew "C" SPEC... [/quote This may be more recent: http://quakerstate.com/#/motor-oil/ultimate-durability It is the "B" spec. It is interesting to note that on the Quaker State Ultimate Durability PDS for the 5w-50, the spec isn't listed. But the PDS is from...

Originally Posted By: OVERKILL Originally Posted By: 07GT500 Originally Posted By: DuckRyder In the link I posted there is another link to a thread on a mustang board. Among the statements in that tread is one that ford engineering stated that the programming in the "track pack" cars was...

Originally Posted By: DuckRyder In the link I posted there is another link to a thread on a mustang board. Among the statements in that tread is one that ford engineering stated that the programming in the "track pack" cars was revised with the heavier oil in mind. If FRPP crate engines are...

The light (relatively) valve springs and roller followers mean that the oil doesn't have to be retardedly high in EP additives to do well in this type of OHC application FWIW. And with respect to the the F-150/F-250, they make 60 less HP than the Mustang GT. Lower power density means less heat...

Originally Posted By: wherermykeys From what I can tell by my limited googling, Castrol meets the WSS M2C931-A but not the WSS M2C931-B I don't know where you got your info on Castrol...FYI the new "SN" formulation does NOT meet spec nor do they recommend their 5W-50 in FORD spec "B", FORD...

I've been doing a lot of reading & research on different types of oils...the deeper you DIG the more confused you get! My conclusions are if you strictly "STREET" drive and the occasional blast a good quality 10w30 to a good 40 weight is all we need on STOCK set-up, I'm on the fence between...