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View Poll Results: Which oil do you use? | |||
Amsoil |
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79 | 22.13% |
Castrol |
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19 | 5.32% |
Champion |
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0 | 0% |
Chevron |
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0 | 0% |
Conoco |
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0 | 0% |
Citgo |
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0 | 0% |
Havoline |
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1 | 0.28% |
Interstate |
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0 | 0% |
Kendall |
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1 | 0.28% |
Lowe |
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0 | 0% |
Marathon |
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0 | 0% |
Mobil 1 |
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224 | 62.75% |
Motorcraft |
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0 | 0% |
National |
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0 | 0% |
PennZoil |
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4 | 1.12% |
Quaker State |
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3 | 0.84% |
Redline |
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10 | 2.80% |
Royal Purple |
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11 | 3.08% |
Valvoline |
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5 | 1.40% |
Voters: 357. You may not vote on this poll |
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#81 | |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,697
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![]() Quote:
1300 ppm zinc http://www.castrol.com/liveassets/bp...GTX_Diesel.pdf
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
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#82 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,697
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Also
"BTW - The Castrol Rep also told me that the Castrol Diesel 15W-40 oil has a higher flash and shear point than the Castrol 10W-40 and 20W-50 oil I have been using in the Old Broad since she was new. Great!!! That way I don't have to worry about coking of the oil in the turbo oil cavity in the summer or winter especially after running her hard on the freeways or the streets in the summer." ....Comment on Feb 2012
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
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#83 |
![]() ![]() Join Date: Feb 2010
Location: Pendleton, IN
Posts: 3,904
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Good to hear, Dom. I was just wondering about that after a discussion with my engine guy today. Do you have cats?
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1988 KOH Prototype EX5023 sold 1990 ZR-1 #444 Convertible 1990 ZR-1 Black #966 1991 ZR-1 Quazar Blue #296 1957 Duntov SS Project |
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#84 |
![]() Join Date: May 2011
Location: Sydney, Australia
Posts: 2,479
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I generally like a heavy body Olive with a little oregano and plenty of garlic.
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Robert J. DeMarco [SIGPIC][/SIGPIC] [COLOR=blue]G[/COLOR][COLOR=red]rand[/COLOR] [COLOR=blue]S[/COLOR][COLOR=red]port[/COLOR] Registry Lifetime Member NCM Lifetime Member #2655 Pacecar Registry Member [COLOR=red]ZOOM Charter Member - ZR-1 Owners of Michigan[/COLOR] [COLOR=plum][I]ZR-1[/I] Registry member since 2012 [/COLOR] [COLOR=black]1990 LPE "368" Aerobody ZR-1, Last ZR-1 built by John[/COLOR] 1991 Callaway Aerobody ZR-1, DRM 500 1991 Shinoda Aerobody Spyder, 1998 Pace Car |
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#85 |
![]() ![]() Join Date: Dec 2003
Location: Grand Island NE
Posts: 1,510
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I have been using this in the Atomic Z per recommendation from Flyin Ryan
http://joegibbsdriven.com/trainingce...hotrodoil.html
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Dennis Fierstein 90 ZR-1 #2562 Atomic-Z ZR-1 Net Registry Chairman of the Board ZR-1 Net Registry Treasurer |
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#86 |
![]() Join Date: Dec 2004
Location: Jacksonville, FL USA
Posts: 4,645
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With respect to this ZDDP issue and cam lobe failure, I'll pass this nugget along that showed up in a newsletter I get called LSxTV....or something like that. I get like three of them every week.
Anyway, fwiw, they had an article last month discussing oil & ZDDP & cam/lifter failures. I can't remember specifically which boutique oil company participated, but they had an oil company engineer in the discussion along with an engineer from CompCams. Anyway, the main point was that all the agony over the cam wear was due to the blank supplier to CompCams using some bad metal, and not the reduction of the levels of ZDDP to the present levels. This was CompCams' research findings. I'll go thru their archives and if I find it I'll post a link, okay? In a somewhat related situation. I have a Q about this ZDDP thing in my own mind that I don't have enough knowledge to noodle thru to an answer: What about all the DOHC motors that are in all these economy cars like my Cobalt? Don't they need this ZDDP at the correct levels? I mean even a lot of the V6's are DOHC motors, like the base motor in the stangs & camaros, no? I guess what I don't get is would OEM's be offering these warranties knowing that new oil will cause cam failure? Sorry for my sticking my two cents in here, but something just doesn't add up to me in this whole picture. ![]() ![]() Tom
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1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member |
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#87 |
![]() Join Date: Aug 2011
Location: Evergreen, Co.
Posts: 346
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The definitive Marc Haibeck's article on this subject says correct ZDDP is in Mobil 1 High Mileage or Amsoil - http://www.zr1specialist.com/HAT%20W...5%20Engine.pdf -
"Most modern GM engines use roller valve lifters. They have short timing chains to drive a single camshaft or dry belts to drive multiple camshafts. The need for EP protection for these engines is decreasing. Japanese carmakers that like to use long metal timing chains are evaluating the effects of the future oil standard on their designs. My concern is for the flat valve lifters, the camshafts, the timing chains and the sprockets in the LT5. I believe that the SM oil for new cars is not appropriate for the LT5. The Mobil 1 Oil Company has also recognized the needs of flat lifter engines with respect to their products. They recommend their reformulated 15W-50 productvi for engines with high-tension valve springs. I think that 15W-50 oil is too high in viscosity for the LT5. The Mobil 1 High mileage products are also acceptable for the LT5 engine. The Amsoil Company has addressed this issue with a product that is specifically designed for engines with flat valve lifters and high tension valve springs. It is formulated with high phosphorus and zinc protection. It meets the API SG specification that was used when the LT5 was designed. The product is named AMO 10W-40 Synthetic Premium Protection. It takes a two-pronged approach, higher EP additives and superior film strength due to the higher viscosity. AmsoilAMOZDDPspecifications: Phosphorus 1265 ppm Zinc 1378 ppm Comment: Recommended for the LT5 engine. Also for other engines with high tension valve springs.
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Bert Rankin 1991 ZR1 Steel Blue / Steel Blue #1029 Haibeck chip, slotted rotors, camber brace, C-beam plates, OBX exhaust, Nitto NT555 tires [SIGPIC][/SIGPIC] |
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#88 |
![]() Join Date: Feb 2012
Location: Ledyard,CT
Posts: 8,148
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I have used Mobil 1 15W-50 for 18 years.
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#89 |
![]() Join Date: Feb 2013
Location: Yakima Washington
Posts: 401
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I use "Mobil I high mileage" per forum recommendations.
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Jim 1990 Z # 2441 1959 c-1 230 HP 4 speed frost blue/silver 3 owner 2011 cts-v 556 HP, manual 6 speed 1955 chev 2dr ht PP 265 3 speed w/OD |
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#90 |
![]() Join Date: Jun 2013
Location: Jupiter, Florida
Posts: 112
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![]() Amsoil also, for the same reason Nick and 32valvZ stated
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1965 Corvette Black/red Vert 1995 "Last" Admiral Blue ZR1 #438 Member # 760 NCM Lifetime member #1005 NCRS # 23110 [I][B]Sting Rays Corvette Club of Florida Gold Coast Corvettes Club[/B][/I] |
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