02-15-2016, 11:52 AM | #11 | |
Senior Member
Join Date: May 2010
Location: Under A Clean V8
Posts: 228
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Re: Flathead smoke
Quote:
Don't be fooled, Shell Rotella T, the original Rotella T is exactly the oil that everybody bought and used (irregardless of name brand) up until about 1980 when the SAE/API specifications were updated due to catalytic converters The original Rotella T may be popular in Diesel engines today yet it was amongst the most popular SAE/API spec gasoline engine oils ever run threw Detroit steel up until we were handed the new spec oils 35 years ago. Our Flatheads have not changed and neither has the original Shell Rotella T oil. Almost every oil/manufacturer on the market today has updated their current engine oil offerings to newer SAE/API specs except for a few like Shell, Which still offers us the original formula of Rotella T that would have been/is equivalent in spec to/as pre 1979~ Chevron Delo, Royal Purple, Mobil Delvac, Valvoline premium, Citgo Citgard, Connoco Phillips 76, Castrol Tech etc. The newer Rotella T3 is the original blend somewhat updated but still to pre 1980 API/SFI specs featuring the original high ZDDP and high phosphorus contents that all oils held up until the advent of catalytic converters. If you wish to run the closest thing to what every piece of American steel was born and bread on for more than 75 years, then you will not get anything closer than the original Single grade conventional oil—in SAE 20, 30, 40 and 50 Rotella T with it's pre 1979~ specifications that is still popular on the gasoline/racing/turbocharging/diesel/farm/motorcycle market today.. (Or T3 in multi-grades) Personally, I have been running Synthetic oils in almost every vehicle I have owned since 1984 including and at times, Model A's, Flathead V8's and always daily drivers. I have owned about 65 classic cars and trucks in that time and generally commute (up to) 60,000 miles a year with daily drivers. I do oil changes on vehicles every September before the snow flies, (Including the Flatheads and Bangers) and this is what I bought to get me thru winter 2015. My 28 Model A got the Rotella T3 and the Flathead V8's all got synthetic. I have a 1979 LTD Special (Fire Chiefs Car with lights) that has a leaky rear seal so it got regular non synthetic oil and will do so until I fix the seal. . Don't be scared of Rotella T, Rotella T3 , Chevron Delo, or the excellent money saving Synthetic oils that you can run for 10,000+ miles whether it's your daily driver or even in Flatheads. Consider this; the new Synthetic oils are being used in Heavy Truck applications today and the manufacturers recommended oil change interval on most semi's is between 25,000 and 40,000 miles using one oil filter. All Synthetic oils surpass Rotella T in engine protection while offering superior adherence to on-spec weight/viscosity for many more thousands of miles/hours. That is to say that they will remain to be an on spec W30 viscosity oil for 10 times longer than a similiar non synthetic 30 weight oil (which tends to thin rapidly with age after roughly ~2000 miles). http://www.machinerylubrication.com/...ange-intervals Rotella T and Rotella T3 is a high ZDDP and High Phosphorus Content oil compatible with older engines with or without flat tappet cams and/or hardened valve seats just as it was prior to 1980. ====================================== Shell Rotella T From Wikipedia, the free encyclopedia Shell Rotella T is a line of heavy duty engine lubrication products produced by Shell Oil Company. The line includes engine oils, gear oils and coolants. The oil carries both the American Petroleum Institute (API) diesel "C" rating as well as the API gasoline engine "S" rating. Ratings differ based on the oil. Rotella oils like T3 15w-40 meets both the API CJ-4 and SM specifications, and may be used in both gasoline and diesel engines. However, it is formulated specifically for vehicles without catalytic converters, containing phosphorus levels beyond the 600-800ppm range.[1] Therefore, Rotella is not recommended for gasoline vehicles with catalytic converters due to the higher risk of damaging these emission controls.[2] Newer formulations of Rotella T6 however are API SM rated as safe for pre-2011 gasoline vehicles. Product lineup In the engine oil family, there are four basic oil sub-families:
synthetic SAE 5W-40 meet the newest API certification of CJ-4/SM. Shell is marketing their new CJ-4/SM oil as "Triple Protection," meaning it provides enhanced qualities for engine wear, soot control and engine cleanliness. Shell's Rotella website indicates that on-road testing confirms the new Triple Protection technology produces better anti-wear characteristics than their existing CI-4+ rated Rotella oil. This is achieved despite a lower zinc and phosphorus additive level as called for by the API CJ-4 specification. (The 15W-40 Rotella T with Triple Protection oil has approximately 1200 ppm of zinc and 1100 ppm phosphorus at the time of manufacture.) Competitors Rotella competes with similar lubrication products from other oil manufacturers. Some notable competitive products are:
Though marketed as an engine oil for diesel trucks, Rotella oil has found popularity with motorcyclists as well. The lack of "friction modifiers" in Rotella means they do not interfere with wet clutch operations. This is called a "shared sump" design, which is unlike automobiles which maintain separate oil reservoirs - one for the engine and one for the transmission. Used oil analysis (UOA) reports on BobIsTheOilGuy.com have shown wear metals levels comparable to oils marketed as motorcycle-specific. Use in turbocharged cars Likewise with motorcycles, though marketed as an engine oil for diesel trucks, Rotella T6 5w-40 synthetic oil has also found popularity with drivers and tuners of gasoline powered vehicles that utilize turbocharging or other forms of forced induction. Several owners of high performance model cars have adopted its use due to its high heat tolerance and its resistance to shearing. Rotella T6 is a Non Energy Conserving Oil, and does not meet GF-5 Oil specifications. When Rotella T6 was revised for the API specification(for use in spark ignition motors), its Zinc levels were effectively reduced. Higher(content) Zinc Additives(ZDDP) are required for flat tappet engines and cartridge bearings, which In previous formulations Rotella T6 had desirable levels of Zinc(ZDDP). Last edited by moefuzz; 02-20-2016 at 06:43 AM. |
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