Aurora Rancher
Aurora Groupie
Owner of the Last Indy Racing League Pace Car 2001
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Post by Aurora Rancher on Dec 5, 2008 18:27:41 GMT -6
 I use Extended drains intervals. The 3,000 miles (my Dad preached 2,000 miles) is an old set of standards brought by many years of keeping your engine in top running order (circa 1940s to the 1980s). Check an old owners manual from the 60s, 70s or even in the 80s and you will see 3,000 mile recommendations. Since the Standards of ASME has gotten stricter and the Emissions by the EPA gotten stricter, our cars/trucks run a lot cleaner today than ever before and with less fuel contamination to breakdown the motor oils, as in the past. The Owners manuals have kept up with the standards. If you are using a conventional Petroleum Motor Oil, then go by your drain intervals recommended by the Manufacturer.  Now on to how I have and do things:  My '97 GMC K-2500 Suburban has 180,000 miles on it and it has gone as far as 29,000 miles prior to changing oil. It has had Amsoil 10w-30 full Synthetic oil in it since it was new + 3000 miles (1st oil change). I have pulled construction trailers with equipment on. I also travel as far away as FL, PA, NJ and IA with it. I need to rely on it as much or more than anyone else has to. It has never let me down. I and the 'burb just returned from NJ with my 5th Aurora and a pop-up camper loaded on a 36' open car trailer. I am set to sample the oil in it here this week to see if I need to change the oil &/or filter. The last oil change was at 171,009 miles when I was in FL back in May '08. My wife's car ('03 Jaguar) has had either the Series 3000, 0w-30 or the European 5w-40, both from Amsoil in it's Supercharged 4.2 V-8. It now has 101,000 miles, and has gone between 10 to 15,000 miles a year.  The longest drain interval I have ever gone is with my 1990 KW T-600 (CAT 3406 engine) Dump Truck. It had gone 5 years with 380,000 miles (with about 30% of those being off road miles) with NO oil change. It had a separate bypass filter to help keep the oil clean, but still after doing the Oil Samples to analyze the oil (via Oil Analysis, Inc in Shaumburg, IL), it surprised even me that all the truck needed after each oil sample was changing either the bypass filter and/or the normal full flow filter as recommended by Oil Analysis, Inc. and Amsoil. The oil was sampled at the end of each Construction Season (in November/December). My Auroras and other cars have (over the years) had an Amsoil oil change yearly regardless of the miles put on them.  Yes, I know that is a little extreme for the Pace Car (as it is only driven <1000 miles a year), but that car is worth the extra money. My other trucks, cars and other Auroras all have had between 13 to 25,000 miles on them in a year. :)And, No engine troubles from any of my vehicles, except when my 1st wife  let a 1981 Olds Cutlass Cruiser w/350 diesel (7 quart system) run out of oil. As it used a quart of oil every 1,000 miles and she never thought to check it, needless to say after about 7,000 miles, the engine only needed a new crank when it spun the #4 main bearing. As a testament to Amsoil, the cylinders still had the cross hatch marks from the original machining and no wear lip at the top of the cylinder as one would have expected after 107,000 miles. Engine was re-assembled with most of the Original parts and drove another 60,000 miles before an accident took it from her. You can visit www.Amsoil.com to find a Dealer near you. For anyone near me just drop me an off line Private Message and I will help you out. 
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Post by latenight72 on Dec 5, 2008 19:45:30 GMT -6
I'm at 19,000 on this Amsoil (5w-30 HDD) change. Will be changing it out in the next 1,000 miles.
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Post by BlackButy on Dec 8, 2008 15:07:22 GMT -6
Somebody here should have an oil analysis done on whatever they are using. Im going to try Mobil 1 10w30 High Mileage next go around. This stuff looks very robust, almost along the lines of a diesel oil. I wish I new what the total base number is on it, probably around 10 or so. I believe the extended performance version is close to 12. The 10w30 high mileage is thick for a 30wt and offers a good amount of zinc/phosphorus, 1000ppm, good for a first gen aurora, northstar.
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Post by lanceslambos on Dec 8, 2008 17:13:37 GMT -6
19 -29k between oil changes!?! |
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Aurora Rancher
Aurora Groupie
Owner of the Last Indy Racing League Pace Car 2001
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Post by Aurora Rancher on Dec 15, 2008 16:15:10 GMT -6
YES, 19,000 to 29,000 miles between oil changes. That is a mixture of City and Highway driving. Again go to www.amsoil.com and read more about it. If you order or by use the referral # on checkout 164030. 
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Post by Deleted on Feb 3, 2009 17:01:18 GMT -6
YES, 19,000 to 29,000 miles between oil changes. That is a mixture of City and Highway driving. Again go to www.amsoil.com and read more about it. If you order or by use the referral # on checkout 164030. do we get a discount or are we making you a preferred customer? I'm tihnking about running this stuff next change (1,00 mi) |
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Post by latenight72 on Feb 3, 2009 23:24:17 GMT -6
do we get a discount or are we making you a preferred customer? I'm tihnking about running this stuff next change (1,00 mi) Be forewarned that it will be $100 or so for oil alone. |
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Post by Deleted on Feb 8, 2009 18:00:51 GMT -6
do we get a discount or are we making you a preferred customer? I'm tihnking about running this stuff next change (1,00 mi) Be forewarned that it will be $100 or so for oil alone. WHAT ........nvm ill go mobil 1 |
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Post by robaurora01 on Feb 8, 2009 18:24:06 GMT -6
lol thats your best bet mobil 1 synthetic 5w30 is what I use and it has stopped my oil that has been missing for my past 3 oil changes
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Post by Deleted on Feb 8, 2009 20:24:09 GMT -6
lol thats your best bet mobil 1 synthetic 5w30 is what I use and it has stopped my oil that has been missing for my past 3 oil changes And I get big discounts at the store I work.....last time I check 40 percent off all general merchandie and 60 percent off clothing!! (those rates are only on special days  though) |
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Post by latenight72 on Feb 8, 2009 21:54:41 GMT -6
Be forewarned that it will be $100 or so for oil alone. WHAT ........nvm ill go mobil 1 True but $100 in Amsoil will last you $192 of Mobil 1. (20k total miles, $6 per quart of M1, 8 quarts per change, 5k intervals) |
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Post by Deleted on Feb 8, 2009 22:39:48 GMT -6
But I can get mobile one at a much cheaper price were as amsoil is a specialty store item.
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scottydl
Super Moderator 
There's nothin' like an American V-8...
Posts: 7,373
Staff Member
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Post by scottydl on Feb 9, 2009 13:10:11 GMT -6
And 5k intervals is quite conservative for M1. Even most dino oils will get you further than that following the DIC recommendation. As discussed in this thread, M1 Extended Performance is rated for 15k/1 year. I buy it when it's on sale and costs NO extra over standard M1.
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scottydl
Super Moderator
There's nothin' like an American V-8...
Posts: 7,373
Staff Member
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Post by scottydl on Jul 2, 2009 8:45:11 GMT -6
Update: I changed my oil today, after about 11 months and 9,820 miles. I figured that was long enough, even though M1 EP is rated for 12 months or 15,000 miles ... Exact mileage at today's change was 106,793 so I'll see you back here next Halloween at 116-120k. Thought I'd bump this thread, since we're always discussing oil products. I'm right on schedule with the above interval, just over 114k and due for another change in a couple months. Advance Auto had their M1 sale a couple months ago, so I'm already stocked on the Extended Performance oil and filter. Just waiting for the time/mileage to roll around! At this rate, when I do end up selling my Aurora  the new owner will have almost new year-long full synthetic oil in the crankcase. |
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I use Extended drains intervals. The 3,000 miles (my Dad preached 2,000 miles) is an old set of standards brought by many years of keeping your engine in top running order (circa 1940s to the 1980s). Check an old owners manual from the 60s, 70s or even in the 80s and you will see 3,000 mile recommendations. Since the Standards of ASME has gotten stricter and the Emissions by the EPA gotten stricter, our cars/trucks run a lot cleaner today than ever before and with less fuel contamination to breakdown the motor oils, as in the past. The Owners manuals have kept up with the standards. If you are using a conventional Petroleum Motor Oil, then go by your drain intervals recommended by the Manufacturer. 
My '97 GMC K-2500 Suburban has 180,000 miles on it and it has gone as far as 29,000 miles prior to changing oil. It has had Amsoil 10w-30 full Synthetic oil in it since it was new + 3000 miles (1st oil change). I have pulled construction trailers with equipment on. I also travel as far away as FL, PA, NJ and IA with it. I need to rely on it as much or more than anyone else has to. It has never let me down. I and the 'burb just returned from NJ with my 5th Aurora and a pop-up camper loaded on a 36' open car trailer. I am set to sample the oil in it here this week to see if I need to change the oil &/or filter. The last oil change was at 171,009 miles when I was in FL back in May '08. 
Yes, I know that is a little extreme for the Pace Car (as it is only driven <1000 miles a year), but that car is worth the extra money.
let a 1981 Olds Cutlass Cruiser w/350 diesel (7 quart system) run out of oil. As it used a quart of oil every 1,000 miles and she never thought to check it, needless to say after about 7,000 miles, the engine only needed a new crank when it spun the #4 main bearing. 
though)
the new owner will have almost new year-long full synthetic oil in the crankcase.