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| [GMCnet] Motor Oil with proper ZDDP level [message #75074] |
Sat, 27 February 2010 11:18  |
bdub
Messages: 1578
Registered: February 2004
Location: Central Texas
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Just received this from a fellow GMCer not on this list. I know a few
others received it also. The post came from a Corvette forum.
It would be good to have in our archives, so here it is in its entirety.
Starting in 1993 The American Petroleum Institute (API) and International
Lubricants Standards Approval Committee (ILSAC) mandated reductions in ZDDP
(Zinc Dialkyl-Dithio-Phosphate or "zink"), the most commonly used anti-wear
additive in motor oils. ZDDP contains both zinc and phosphorus components
working together to provide anti-wear protection. Reducing the level of ZDDP
compromises protection to engine components, most notably in flat tappet
camshafts, and dramatically during flat-tappet cam break-in. The level of
ZDDP specified in the 1988 API SF was 1500 ppm, and in the 1993 API SG 1200
ppm. Introduced in 2005, current API SM and ILSAC GF-4 specifications for
gasoline engines have maximum and minimum phosphorus levels of 800 ppm and
600 ppm, respectively, for SAE 0W-20, SAE 5W-20, SAE 0W-30, SAE 5W-30 and
SAE 10W-30 motor oils. All other gasoline SAE grades do not have a mandated
phosphorus limit. Flat-tappet camshaft failures appeared with introduction
these specifications in 2005.
From these specifications and timeline, we propose that 1200 PPM is a
minimum phosphorus level and 1500 PPM or more is suggested for extreme lifts
and spring pressures.
The list below are oils that appear to contain >= 1200 Parts Per Million
(ppm) ZDDP (Zinc Dialkyl-Dithio-Phosphate or "zink") for flat-tappet cams.
At the bottom of the list are oils made specifically for flat-tappet
break-in with far higher concentrations. Note that it's extremely critical
that the list specifies products and grades; anything other than the
products and grades listed need to be researched on your own.
No warrantly expressed or implied, do your own research, use at your own
risk and don't run with scissors. My point here is that I'm not an expert -
this is just a starting point for you to research. Let me know of any
changes or any additional data - with pointers to either a claim of
flat-tappet support or the ZDDP PPM.
I have declined to include racing oils that are only available in
single-weight, "ZDDP" additives, and oils that are not readily
retail-available as these are outside of the scope of this list
Thanks to all the folks that posted oil information across the Forum and on
this thread!
Should you choose to do your own oil analysis:
Blackstone Labs (www.blackstone-labs.com/)
Oil List
Amsoil Synthetic Premium Protection
(http://www.amsoil.com/StoreFront/amo.aspx)
Grades: 10W40 (AMO), 20W50 (ARO)
Claim: "It is ideal for high-mileage vehicles, vehicles with flat-tappet
cams and high-stress vehicles subject to hot temperatures, heavy hauling,
trailer pulling or off-road use."
Verification: ~1265 PPM:
https://www.amsoil.com/dealer/techse...t%20Tappet.pdf
Additional Information:
AMO 10W-40 Synthetic Premium Protection Phos: 1265 Zinc: 1378
ARO 20W-50 Synthetic Premium Protection Phos: 1266 Zinc: 1379
HDD Series 3000 Synthetic 5W-30 Diesel Oil Phos: 1266 Zinc: 1379
TRO 20W-50 Synthetic Racing Oil Phos: 1235 Zinc: 1370
AHR SAE 60 Synthetic Racing Oil Phos: 1265 Zinc: 1375
Brad Penn (http://www.bradpennracing.com/Products/Racing-Oils.aspx)
Grades: 10W30,10W40,20W50
Claim: "...increased concentration of "zinc" (zinc dialkyldithiophosphate
a.k.a. ZDDP) provides outstanding anti-wear/anti-scuffing protection for
engines employing either 'flat tappet' or roller cams."
Verification: "The Penn-Grade 1R oils "typical" 1,500 ppm Zinc (Zn) and
1340-1400 ppm Phosphorus (P) content". NOTE that a number of posted oil
analysis have shown far lower ZDDP - in the 700-1100 range.
Castrol Syntec 20W-50
(http://www.castrol.com/castrol/genericarticle.do?categoryId=82915470&conten
tId=7032644)
Grades: 20W50
Claim: "Engineered to increase wear protection for classic cars with flat
tappet camshafts"
Verification: Email from Castrol 12/9/09: Current Syntec 20W-50 (for classic
cars) is actually a modern premium quality API SM product that has been Zinc
boosted to Zinc levels that are reminiscent of levels from historic API
categories such as SG when flat tappet cams with high spring loads were
common in the fleet. For reference, note that the API SM category has the
most rigorous passenger car engine oil (PCO) test performance requirements
in the history of the API PCO categories. The level of Zinc in the new
Syntec 20W-50 is a minimum of 1200 ppm, which will provide excellent
anti-wear protection for the cam and lifters in a flat-tappet cam engine.
Collector's Choice Motor Oil
(http://www.mossmotors.com/Shop/ViewProducts.aspx?PlateIndexID=65910)
Grades: 20W50
Claim: Read verification sheet below
Verification: 2000 PPM claimed:
http://www.mossmotors.com/graphics/p...0-815_INST.pdf
Joe Gibbs Hot Rod Oil (http://www.joegibbsracingoil.com/hotrod/index.html)
Grades: 10W30, 15W50
Claim: Higher levels of Zinc (ZDP) than regular passenger car oils. Delivers
proper anti-wear protection for older style push-rod and flat-tappet
engines.
Verification: 1270 PPM ZDDP
http://www.joegibbsracingoil.com/Dat...2010-22-07.doc
Mobile 1 15W-50
(https://www.mobiloil.com/USA-English/MotorOil/Oils/Mobil_1_15W-50_.aspx)
Grades: 15W50
Claim: "Mobil 1 15W-50 is also recommended for older valve train designs
that may benefit from a higher level of anti-wear normally not required for
newer generation vehicles."
Verification: 1200 PPM ZDDP
http://www.mobiloil.com/USA-English/...duct_Guide.pdf NOTE: ONLY bottles
bearing the "For Older Engines" note on the label.
Red Line Synthetic Motor Oil
(http://www.redlineoil.com/Products.aspx?pcid=21)
Grades: 0W20, 5W20, 0W30, 5W30,10W30, 0W40,5W40,10W40,15W50,20W50
Claim: They make no claim regarding flat-tappet engines on their website.
Verification: Around 1300-1400 PPM on Bob Is The Oil Guy posts. Search for
others.
http://bobistheoilguy.com/forums/ubb...13#Post1539713
Royal Purple RP (http://www.royalpurple.com/motor-oil.html)
Grades: 0W40, 5W20, 5W30, 5W40, 10W30, 10W40, 15W40, 20W50
Claim: "For stock or mildly modified flat tappet valve trains (<.525" lift),
we recommend our SAE 10W40, 15W40 or 20W50 engine oils."
Royal Purple XPR (http://www.royalpurple.com/xpr-racing-oil.html)
Grades:0W10, 5W20, 5W30, 10W40, 20W50
Claim: "In applications with flat tappet valve trains using high-lift cams
and/or high RPM applications, we strongly recommend upgrading to our XPR
line of engine oils as these have an even greater concentration of ZDDP
providing excellent protection with the higher spring pressures."
Verification: Zinc: 1948/Phos: 1402
http://bobistheoilguy.com/forums/ubb...84#Post1461984
Shell Rotella T Multigrade
(http://www.shell.com/home/Framework?siteId=rotella-en&FC2=/rotella-en/html/
iwgen/products/zzz_lhn.html&FC3=/rotella-en/html/iwgen/products/triple_prote
ction_detail.html)
Grades: 15W40, 10W30
Claim: None stated on web
Verification: Shell Technical email 12/9/09: "Rotella T does meet both API
CJ-4 and API SM requirements and still has ~ 1200 ppm ZDDP . The reduction
in ZDDP requirement is not an API specification, but an ILSAC GF 4
requirement."
Valvoline VR1
(http://www.valvoline.com/products/consumer-products/motor-oil/high-performa
nce-motor-oil/6)
Grades: 20W50, 10W30
Claim: "High zinc/phosphorus provides extreme wear protection, including
flat tappet applications."
Verification: 1300 - 1400 PPM ZDDP
http://www.valvoline.com/pdf/VR-1_Racing_Motor_Oil.pdf NOTE that there are
some real concerns with VR1 due to inconsistent test results.
Valvoline Specialty Racing Oil ("Not Street Legal")
(http://www.valvoline.com/products/consumer-products/motor-oil/racing-motor-
oil/9)
Grades: 20W50
Claim: "High zinc/phosphorus provides extreme wear protection, including
flat tappet applications."
Verification: 1300 - 1400 PPM ZDDP
http://www.valvoline.com/pdf/Special...acing_Oils.pdf
Valvoline Roush Full Synthetic
(http://www.valvoline.com/products/consumer-products/motor-oil/high-performa
nce-motor-oil/7)
Grades: 5W30, 5W50, 10W30, 10W40
Claim: "Provide longer lasting zinc/phosphorus anti-wear."
Valvoline Racing Synthetic
(http://www.valvoline.com/products/consumer-products/motor-oil/high-performa
nce-motor-oil/8)
Grades: 20W50, 10W30
Claim: "High zinc/phosphorus for extreme anti-wear, including flat tappets."
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bdub
'76 Palm Beach/Central Texas
www.bdub.net
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