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grease monkey
Joined: 06 Feb 2004
Posts: 47
Location: TX
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| Posted: Mon Feb 23, 2004 10:58 pm Post subject: Synthetic vs Petroleum |
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I'm a firm believer in synthetic oils, I use them regularly in all of our transmissions and differentials. they tend to withstand heat better and exhibit less viscosity breakdown. You can also go for longer periods between change intervals.
I'm just curious what everyone's thoughts are on using synthetics in the engines. I find it hard to justify that sort of expense, because engine oils are typically changed every 10,000 to 20,000 miles (depending on your fleet standards and truck application) Granted, you can get an extended enterval with the synthetic, but only an extra 10,000 miles maybe.
Do any of you think its worth the extra cost? |
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solo379
Joined: 14 Feb 2004
Posts: 3132
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| Posted: Tue Feb 24, 2004 8:51 am Post subject: |
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| I'm in a total agreement with you on this one! :) Sintetics is a MUST, for tranny and axles. But not worth an effort on engine. I know, some large fleets using it, with 60,000 oil change interval, but than again, i wouldn't recomend those trucks. :D |
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grease monkey
Joined: 06 Feb 2004
Posts: 47
Location: TX
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| Posted: Thu Feb 26, 2004 9:34 pm Post subject: |
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| Even for a senthetic, 60k is A LOT of miles to go between oil changes. I sure hope they inspect the rest of the truck between those at some point!!! |
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solo379
Joined: 14 Feb 2004
Posts: 3132
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| Posted: Thu Feb 26, 2004 9:42 pm Post subject: |
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| Nah.. they'll just trade it at the point the trouble gonna starts. :sad: And than some poor fella gonna buy it from "Select trucks" :evil: They not gonna keep it for long, why would they care!? :x |
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Guest
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| Posted: Tue Mar 02, 2004 7:57 pm Post subject: |
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| I dont mind senthetics for the reas and the axles but give me the petrol oil for my motors between oil changes |
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ksgreenmch
Joined: 14 Dec 2003
Posts: 86
Location: Emporia Kansas
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| Posted: Tue Mar 02, 2004 8:05 pm Post subject: |
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| I'm in agreement with solo on this one. Senthitics are ok for rear ends and transmissions but give me my hi-grade oil for my engins to burn out there on the highways and make it Shell Rotella 15-40 or Mobil oil 15-40 weight oils for the road |
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icedad
Joined: 10 Nov 2002
Posts: 427
Location: s/w Ga
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| Posted: Wed Mar 10, 2004 9:46 pm Post subject: |
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I've used synthetic oil in all of my trucks since 1988. In the older engines, you'll get less smoke and pollution and less curious cops. You'll have less carbon buildup, less wear on your bearings and cylinder walls, since synthetic oil always leaves a film. Your motor will run cooler and start easier in the winter because synthetic oil will not thicken like reg motor oil. You'll never have a dry startup then, because of the film.
Plus, I have gotten an extra 1/2 mile to the gallon. On reg Rotella, I would change my oil every 10,000 miles. With Amsoil, I change my oil every 30,000 and my filter every 10,000. I send a oil sample in to Cat every so often and have never had a bad report.
If running synthetic oil in your motor makes you feel uneasy, why does every ship, and every airline use it their engines?
NO, I'm not a salesman for Amsoil, I just like the product. |
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icedad
Joined: 10 Nov 2002
Posts: 427
Location: s/w Ga
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| Posted: Wed Mar 10, 2004 9:56 pm Post subject: |
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| HHmmmm..... 108 views and only 7 have voted? They couldn't be afraid now, could they? |
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jteamomaha
Joined: 13 Mar 2004
Posts: 50
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| Posted: Sun Mar 21, 2004 11:42 pm Post subject: Amsoil Synthetic..... |
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| Have been a faithful user of Amsoil Synthetic even in my cars. As soon as they have 6,000 to 8,000 mi. on them, they're switched to Amsoil. The company I used to drive for has used it in their fleet for nearly 20 years. It can't be beat, blows Mobil I off the charts for lubrication. |
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todd
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| Posted: Tue Apr 27, 2004 8:55 am Post subject: synthetic |
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| OK, so what weight synthetics do you use in your rear ends and trannys? |
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carhaulinjunkie
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Joined: 26 Apr 2004
Posts: 4
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| Posted: Tue Apr 27, 2004 11:28 pm Post subject: |
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| how many miles between amsoil changes do you run. what about tranny, rear end. thanks |
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solo379
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Joined: 14 Feb 2004
Posts: 3132
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| Posted: Thu Apr 29, 2004 8:32 pm Post subject: |
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| You suppost to change "sintetic" in rears and tranny, every 250k miles. And i still wouldn't recomend sintetic in a engine, espetualy on a older truck, that used to run on mineral! |
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grease monkey
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Joined: 06 Feb 2004
Posts: 47
Location: TX
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| Posted: Sat May 01, 2004 10:40 pm Post subject: |
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I agree with solo about using synthetics in an engine that's used to mineral oils... don't do it.
250K for trans and rears is dead on with synthetics. Personally, I use a 50 weight in the trans and a 75w90 in the rears. Check your owner's manual and consider the temperature ranges you'll be running in before selecting a grade for your truck. 75w90 probably won't cut it in Las Vegas, NV where asphalt temps easily reach 180 degrees in summer, nor would it perform well in Boston in the winter where it's typically frozen for the entire season. What conditions you drive your truck in will decide what weight of oil to use. |
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icedad
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Joined: 10 Nov 2002
Posts: 427
Location: s/w Ga
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| Posted: Tue May 04, 2004 6:23 pm Post subject: |
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carhaulinjunkie, I usually run 30,000 miles between oil changes and 10,000 between filter changes. These standards are the most I'll do. My supplier says if I had to, it wouldn't hurt anything to go longer if need be, because this oil does not breakdown like a petroleum based will.
Do not put this oil in an older motor, because the cleaning properties will cause quite a few leaks from where your'e old oil has deposits, typically around valve covers, oil pan gaskets to name a few.
I tried it in an old ford of mine years ago and turned my driveway into a mess. |
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MACK59B61T
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Joined: 13 May 2004
Posts: 24
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| Posted: Fri May 14, 2004 7:04 pm Post subject: |
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ARE YOU NUTS!!!
I use AMSoil sea60w oil and change it frequently.
I change my oil every 6,000miles and filter's every 3,000 miles.
All my diesel's seem to last. on gas engine's i do oil every 3000 and filter's every 1000 miles.... |
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