wryonki Report post Posted March 7, 2017 We purchased a 2005 40 foot Holiday Rambler Endeavor. We are going to service the motor. What motor oil should be used on a older model? The engine has only 18500 miles on it. Runs beautifully. Cummins recommends Valvoline Premium Blue 15/40. Thanks! Share this post Link to post Share on other sites
jleamont Report post Posted March 7, 2017 15W40. I buy either Mobile Delvac or Shell Rotella, depending on the best deal. Share this post Link to post Share on other sites
Corona4me Report post Posted March 7, 2017 8 minutes ago, jleamont said: 15W40. I buy either Mobile Delvac or Shell Rotella, depending on the best deal. X2 Share this post Link to post Share on other sites
wildebill308 Report post Posted March 7, 2017 I run and recommend Shell Rotella T-6 I get good oil reports. + they have a $5.00 a gal rebate program, for the first 4 gallons. Bill Share this post Link to post Share on other sites
wolfe10 Report post Posted March 7, 2017 FYI, I just visited with Chris Crowel, Cummins Motorhome & Emergency Vehicle Engine Market Leader about the new oil designations here at the Chandler Convention. His/Cummins recommendation is: CK4 15-40. NOT FA4. Share this post Link to post Share on other sites
BillAdams Report post Posted March 7, 2017 ^^^^^^^^ This is why I love this guy! Share this post Link to post Share on other sites
kaypsmith Report post Posted March 8, 2017 Gotta love Uncle Sam, here is a fact sheet about the difference. http://www.deloperformance.com/content/dam/chevron-delo/Brochures/PC-11/CHE-20409 PC 11 Poster_36x48_092315_2.pdf actually a fact sheet and or about delo 400 and their claimed improvement over CK-4. only for what it is worth. Share this post Link to post Share on other sites
manholt Report post Posted March 8, 2017 Shell Rotella ! In Engine and Generator ! Works for me. Carl Share this post Link to post Share on other sites
five Report post Posted March 8, 2017 I use Shell Rotella also. Sams sells cases of six gallons...I buy two cases. Share this post Link to post Share on other sites
ianbullock Report post Posted March 8, 2017 I am perplexed, why not just follow the manufacturers recommendation of Valvoline Premium Blue 15/40? Share this post Link to post Share on other sites
wolfe10 Report post Posted March 8, 2017 15 hours ago, wolfe10 said: FYI, I just visited with Chris Crowel, Cummins Motorhome & Emergency Vehicle Engine Market Leader about the new oil designations here at the Chandler Convention. His/Cummins recommendation is: CK4 15-40. NOT FA4. BTW, just got off the phone with the Service Manager for the large Caterpillar shop in Houston. His recommendation is the same: CK4 15-40. Share this post Link to post Share on other sites
hermanmullins Report post Posted March 9, 2017 Brett, From the conversation last evening I got away from the point. Does the CK4 designation reference the Chemical Compensation of the Lubricant and not the Manufacturer? Herman Share this post Link to post Share on other sites
jleamont Report post Posted March 9, 2017 24 minutes ago, hermanmullins said: Brett, From the conversation last evening I got away from the point. Does the CK4 designation reference the Chemical Compensation of the Lubricant and not the Manufacturer? Herman Yes, said another way It represents the spec the oil must meet. One thing I learned a few years back at an oil seminar; oil specs have a range that each manufacture must achieve to call their product CK4 compliant. Some just barely make it while others cross the minimum threshold and continue to accelerate to the top of the requirements. These are usually the tier 1 manufactures. That answers Ian's question of why branch away from the manufactures recommended oil. OEM fill is not usually a tier 1 product due to costs. So the thought is purchase the better product for engine longevity, better oil analysis reports and hope to gain fuel economy. One thing not mentioned, the proper spec is more critical on engines requiring it, older engines can benefit but its not necessary as the oil technology has improved over the years. Share this post Link to post Share on other sites
wolfe10 Report post Posted March 9, 2017 Yup, you should be able to find all your old favorites in the new API designation. Share this post Link to post Share on other sites
blakeloke Report post Posted March 9, 2017 My owner's manual reads "Cummins Inc. recommends the use of high-quality SAE 15W-40 heavy-duty engine oil, such as Valvoline Premium Blue, which meets performance specifications......." Note: "such as" We are currently using Delo 400 SDE SAE 15W-40 which has a CK-4 designation described in posts above. The beauty of this oil is that it has a backwards compatibility rating for those of us with older engines where original specs called for CH-4 designation. That's the case with our engine. Why Delo 400? Probably because Deb and I have a collective 60+ years working for Chevron. Maybe an emotional tie there! Blake Share this post Link to post Share on other sites
jleamont Report post Posted March 9, 2017 1 hour ago, blakeloke said: My owner's manual reads "Cummins Inc. recommends the use of high-quality SAE 15W-40 heavy-duty engine oil, such as Valvoline Premium Blue, which meets performance specifications......." Note: "such as" We are currently using Delo 400 SDE SAE 15W-40 which has a CK-4 designation described in posts above. The beauty of this oil is that it has a backwards compatibility rating for those of us with older engines where original specs called for CH-4 designation. That's the case with our engine. Why Delo 400? Probably because Deb and I have a collective 60+ years working for Chevron. Maybe an emotional tie there! Blake Well that would be a great reason to support Chevron! Its like paying yourself back, more oil you buy more $$ goes into your pension Share this post Link to post Share on other sites
redandsilver Report post Posted March 9, 2017 6 hours ago, blakeloke said: We are currently using Delo 400 SDE SAE 15W-40 which has a CK-4 designation described in posts above. The beauty of this oil is that it has a backwards compatibility rating for those of us with older engines where original specs called for CH-4 designation. That's the case with our engine. Why Delo 400? Probably because Deb and I have a collective 60+ years working for Chevron. Maybe an emotional tie there! Blake And where do you buy Delo 400 15W-40 oil? In gallon jugs? Average Price??? Share this post Link to post Share on other sites
manholt Report post Posted March 10, 2017 Joe... RedandSilver. Welcome! It would work better, if we knew what make, model and year your coach is...like what is under my signature. Carl Share this post Link to post Share on other sites
wolfe10 Report post Posted March 10, 2017 2 hours ago, RedandSilver said: And where do you buy Delo 400 15W-40 oil? In gallon jugs? Average Price??? Sam's Clubs normally stock 3 packs of gallons-- enter a location for a price: https://www.samsclub.com/sams/delo-400le-heavy-duty-sae-15w40-3-1gal/prod741009.ip?xid=plp:product:1:2 Share this post Link to post Share on other sites
wildebill308 Report post Posted March 10, 2017 Ck-4 is the spec the oil must meet. Here is a good read about the new standards. It looks like they will be using at least a synthetic blend to meet specks. http://rotella.shell.com/products/pc-11.html OEM Specifications and Approvals for Shell ROTELLA® t6 full synthetic heavy duty engine oil API: CK-4, CJ-4, CI-4 PLUS, CI-4, CH-4 ACEA E9; JASO DH-2; Cummins CES 20086; Volvo VDS-4.5; Detroit Fluid Specification (DFS) 93K222, Caterpillar ECF-2/ECF-3, MAN M3575, JASO MA/MA2, Allison TES 439, MB-Approval 228.31 Bill Share this post Link to post Share on other sites
five Report post Posted March 10, 2017 On 3/9/2017 at 8:21 PM, wolfe10 said: Sam's Clubs normally stock 3 packs of gallons-- enter a location for a price: https://www.samsclub.com/sams/delo-400le-heavy-duty-sae-15w40-3-1gal/prod741009.ip?xid=plp:product:1:2 Don't know about Delo, but Rotella carries 6 single gallons per case at my Sams...I need two cases. Share this post Link to post Share on other sites
