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Topic: Oil change intervals  (Read 1168 times) previous topic - next topic

Oil change intervals

I was just reading the oil should be changed every 6 months? The previous owner serviced engine and changed the oil once a year. Wanted to see what everyone else does?
Brian & Lisa Freeze
1996 U295 36FT Build #4914
Motorcade #18760

Re: Oil change intervals

Reply #1 –
Based on time (vs miles) I agree, once a year is fine.

Yes, if you do a lot of idling (not recommended), more frequently.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Oil change intervals

Reply #2 –
Given the costs associated with the oil and fluid changes, I have started sending oil samples to Blackstone Labs to be tested when I think I'm getting close to a change time.  Their reports and summary give good info.

I'm happy to know that my trans fluid, supposed to be good for 150k, and currently has 25k on it, is good to go.  As I figured, the 2+ year old and 12k mile oil was ready to be changed.
Keith
2003 U320 38' #6197

Re: Oil change intervals

Reply #3 –
Thank you! I just had the transmission serviced with Transynd, so that will be good for a while. I was thinking once a year on filters and oil.
Brian & Lisa Freeze
1996 U295 36FT Build #4914
Motorcade #18760

Re: Oil change intervals

Reply #4 –
I am going with 1 year or 6,000 mi. which ever comes first.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Oil change intervals

Reply #5 –
Once a year on mine, usually 4-8k miles
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: Oil change intervals

Reply #6 –
Can go at least 20K on Amsoil,change filters at half way point,around 10K.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: Oil change intervals

Reply #7 –
2 years but I need to do an oil sample. I only drove it 1000 miles last year with fresh oil
1996 U295-36, Cummins 300hp, 8.3. Build number 4864. Vin number 1F97D536XTNO54271. Purchased October 31, 2019.

Re: Oil change intervals

Reply #8 –
With a bypass filter and synthetic oil, I replace the engine oil, engine oil filter, and bypass filter every five years (circa 25,000 miles). The practice of disposing of ten gallons of oil every year does not feel "green" to me.
In my opinion, the most important modification for extended oil change interval is a By-pass Filter. I installed the AMSoil By-pass Filter in 2011 which keeps the oil free of wear particles large enough to score bearings for up to 75,000 miles. I plumbed the return line from the bypass filter into the fitting on the top of the engine valve cover. I support this extended oil change interval with the annual oil analysis done from 2012 to 2016. My 1996 Cummins M11 has 140,000 miles now. At 125,000 miles Northwest Cummins in Medford, Oregon, adjusted the valves and the Head Mechanic said that was the cleanest engine he had ever seem ( after 25,000 miles with a bypass filter).
Wyatt
96 U320 40 WTFE, build 4943
84 Toyota Supra towd
2015 Jeep Wrangler towd
Victoria, BC, Canada

Re: Oil change intervals

Reply #9 –
Quote from: P. Wyatt Sabourin –
With a bypass filter and synthetic oil, I replace the engine oil, engine oil filter, and bypass filter every five years (circa 25,000 miles). The practice of disposing of ten gallons of oil every year does not feel "green" to me.
In my opinion, the most important modification for extended oil change interval is a By-pass Filter. I installed the AMSoil By-pass Filter in 2011 which keeps the oil free of wear particles large enough to score bearings for up to 75,000 miles. I plumbed the return line from the bypass filter into the fitting on the top of the engine valve cover. I support this extended oil change interval with the annual oil analysis done from 2012 to 2016. My 1996 Cummins M11 has 140,000 miles now. At 125,000 miles Northwest Cummins in Medford, Oregon, adjusted the valves and the Head Mechanic said that was the cleanest engine he had ever seem ( after 25,000 miles with a bypass filter).
Nothing about your coach is green.. Especially the oil but if it does help the "oil" came from the ground like most the materials its built with .:)
2002 U320 36' Single axle  MOST MODED IN HISTORY SO MUCH ITS ALMOST ILLIGAL
2 slides ( living room and bedroom)
undisclosed
male
female
genderless
nonbinary
transgendered

Re: Oil change intervals

Reply #10 –
Once a. year for me.
1993 U300 40ft GV SE
Build # 4344

Re: Oil change intervals

Reply #11 –
 1yr. or 6k miles oil change, slip under hit the grease fittings 2 times per year along with taking the weight off front end yearly for greasing Kingpins.
Doug W.
96 36' U270 CSGI #4946
04 Toyota Tacoma 4x4
PNW

Re: Oil change intervals

Reply #12 –
Automotive, Recreational Vehicle and Bus B Series Engines 5.9L
Every 10,000 Kilometers [6000 Miles], 250 Hours, or 3 Months1, 4 Section 4
• Lubricating Oil - Change1
• Lubricating Oil Filters - Replace
• Air Cleaner Restriction - Maintenance Check
• Air Intake Piping - Maintenance Check
• Charge-Air Cooler - Inspect4
• Air Compressor - Maintenance Check
• Batteries - Inspect

ISC, ISCe, and ISL Engines
With CM554 and CAPS Fuel System
Every 29,000 km [18,000 mi], 500 Hours, or 6 Months - Maintenance Check Section 8 Every 29,000 km [18,000 mi], 500 Hours, or 6 Months - Maintenance Check Section 8
• Fuel Filter - replace
• Supplemental Coolant Additive (SCA) and Antifreeze Concentration (2) - check
• Coolant Filter - replace
• Lubricating Oil and Filter (1) - replace
• Batteries (4) - check
• Battery cables and connections (4) - check

ISC, ISCe, and ISL Engines
With CM850 and Cummins Common Rail Fuel System
ISL CM2250 Engines Maintenance Checks
Perform maintenance at whichever interval occurs first.
Maintenance Procedures at 32,000 Kilometers [20,000 Miles], 500 Hours, or 6 Months (Section7)
• Fuel Filter (Spin-On Type) - Change7
• Lubricating Oil System - Drain1
• Lubricating Oil Filter (Spin-On) - Change1


ISM and ISMe
Every 24,000 km [15,000 mi], 300 Hours, or 6 Months (1), (3)
Section 4
• Fuel Filter (Spin-on) - change (1)
• Lubricating Oil and Filters - change
• Lubricating Oil Filter (Spin-on) - change
• Coolant Filter - change
• Supplemental Coolant Additive (SCA) and Antifreeze Concentration - check
• Charge-Air Cooler - check
(2)
Ref https://www.lexissecuritiesmosaic.com/gateway/FedReg/parts_Recommended_Maintenance_Schedule.pdf

Signature and ISX
Every 40,000 km [25,000 mi], 800 Hours, or 6 Months (1) (3)
Section 5
• Fuel Filter (Spin-On Type) - change
• Lubricating Oil and Filters - change
 

Re: Oil change intervals

Reply #13 –
Not to stir the pot. But with improved oil additives in the past 20+ years, and improved filters, just can't justify changing low mileage oil every 6 mos. Check out the new oil change intervals on the Cummins ISX.
As always DWMYFG is your money.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country