Q: Why is it so hard to find Havoline ProDS Synthetic in 5qt jugs? A: It is up to each individual retailer to decide what they wish to carry or stock; consumer requests to the retailer(s) helps as the retailer decides which products and pack size to stock based on consumer demand. Q: Any plans on releasing ACEA-compliant 5w30 or 0w30? Something that meets current ACEA A5/B5 or A3/B4 standards would be great. A: We will include this in ongoing product development plans. Q: Will there be a "euro" formula meeting various Euro mfg specs, similar to m1 0w40 or castrol 0w40, and where can it be purchased in the US? A: We will include this in ongoing product development plans. Q: With the Dexron VI standard, it has been said that all Dexron VI fluids from every other manufacturer are basically the same. What makes your product stand apart from the others? A: Chevron recommends Havoline Full Synthetic Multi-Vehicle ATF (our DEXRON-VI licensed product) for a broad range of applications/specifications. Please refer customer to current Marketing brochures specifically developed for this product that identify these applications/specifications. http://www.havoline.com/products/transmission-fluids3.aspx Q: I live in Louisiana. Why is it so hard to find Chevron Supreme in retail stores, such as Wal-Mart, Target, K-Mart, etc.? The only places I can find it is at Chevron gas stations and the prices are high. A: It is up to each individual retailer to decide what they wish to carry or stock; consumer requests to the retailer(s) helps as the retailer decides which products and pack size to stock based on consumer demand. Q: What motor oil do you recommend for my 2008 Chevy Corvette Ls3 engine with 28,000 miles on it? I recently installed an ECS supercharger and American Racing Headers. It has 550 Rwhp. Until now I have been using the recommended 5-30w full synthetic motor oil. Is there oil I should be using to better protect my boosted engine? I do not race my car. Thank you. A: Havoline ProDS Full Synthetic Motor Oil SAE 5W-30 Q: Regarding HDEOs, in a Caltex Document from 1995, titled "THE EFFECT OF ENGINE DESIGN ON HEAVY-DUTY DIESEL ENGINE OIL FORMULATION" a distinction was drawn between the manufacturing trends of the Japanese, American and European engine makers, and the requirements for lubricants to meet those variances. a. Delo CXJ was recommended for Japanese OEM diesels; b. Delo SHP for European; and c. Delo LSA for US designed engines. The paper describes power density, piston ring location, sump capacity, crown thickness, and the requirement for more/less dispersants, greater/lower sulfated ash amongst others to deal with the nuances of design. Has the convergence to modern HDMOs been driven by either a. Convergence in design parameters by the various OEMs; or b. Improvements in the lubricant technology such that the apparent shortcomings in the Caltex paper have been reduced to the point that they no longer are of significance? A: The need for diesel engine oil to be compatible and support the durability of exhaust gas treatment devices in diesel powered vehicles equipped with same and the engine oil performance requirements with increasingly longer recommended service intervals have been major influences in diesel engine oil technology in the last 20 years. Q: Is Chevron designing any lubricants meant to address the LSPI issue in DIT engines? A: The influence of engine oil on LSPI is being evaluated through tests and Chevron is developing engine oils to pass LSPI testing. Q: What would the HTHS be on Delo 400 LE 15W40 and Delo 400 XLE 10W30 be? A: Delo 400 LE SAE 15W-40 HTHS @ 150 °C by ASTM D4683 is > 3.7 mPa.s. Delo 400 XLE SAE 10W-30 HTHS @ 150 °C by ASTM D4683 is > 2.9 mPa.s. Q: Does Delo ELC (Red) contain any 2-EHA? Does Havoline Universal (Yellow) contain any 2EHA? Or any of the chevron antifreezes contain 2EHA? A: Yes, our OAT components include 2-EHA and have been used successfully by most NA OEM’s and fleets over the last 25 years. Every HD truck and engine manufacturer in NA currently approves and/or uses a 2-EHA containing coolant as factory fill. Q: Delo 15W30 Severe Duty, What are the NOACK and HTHS for this product? A: Delo 400 SD SAE 15W-30 HTHS @ 150 °C by ASTM D4683 is > 2.9 mPa.s. Delo 400 SD SAE 15W-30 Noack (1 hour @ 250 °C) by ASTM D5800 is <= 13 mass percent. Q: As a replacement for Delo 10W30, can it be run at the same intervals? (In a highway driven application) A: We would recommend determination of acceptable oil service intervals for Delo 400 SD SAE 15W-30 and Delo 400 XLE SAE 10W-30 by used oil analysis in representative vehicles and service conditions to which the service intervals are applied. Q: At what winter temperatures would you recommend Delo 10W30 over Delo 15W30 Severe Duty? A: Minimum recommended temperature for Delo 400 SD SAE 15W-30 in engines without block heaters is -20°C. Minimum recommended temperature for Delo 400 XLE SAE 10W-30 in engines without block heaters is -25°C. Q: Regarding the Delo LE 5W40, what are the NOACK & HTHS numbers? A: Delo 400 LE SAE 15W-40 Noack (1 hour @ 250 °C) by ASTM D5800 is <= 13 mass percent. Refer to question 1 for Delo 400 LE SAE 15W-40 HTHS @ 150 °C by ASTM D4683. Q: Does Chevron have plans to meet John Deere's oil spec JDQ-78X? Which is 500 hours at 100% full load. A: We will include this in ongoing product development plans Q: Delo 5w-30 has a dual rating of CJ-4 and SN. Does Delo 5w-30 have a higher concentration of detergents and dispersants than a SN rated gasoline engine oil? Would you expect a gasoline engine which is operated with Delo 5w-30 CJ-4/SN to be cleaner than an engine operated with a SN rated gasoline only engine oil? A: A gasoline engine operated with Delo 400 LE Synthetic SAE 5W-30 is expected to be cleaner with fewer/lighter deposits than the same gasoline engine operated under similar conditions with an engine oil of API SN performance only.