OIL
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Although it's not a good thing, my Tempo has gone about 6,000 miles on the oil that's in it now. 3,000 of that was all highway driving within 2 weeks.
That's on Wal-Mart oil. I keep a gallon in the trunk, though I have only added about 1 quart since I changed it last (before the trip).
That's on Wal-Mart oil. I keep a gallon in the trunk, though I have only added about 1 quart since I changed it last (before the trip).
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I don't care how good the oil claims to be, it is still a wear item.
once the oil breaks down it is practically useless in the motor.
once the oil breaks down it is practically useless in the motor.
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Absolutely the point. Synthetic oil takes much longer to wear down than regular oil. That's why Amsoil can be changed every 25,000 miles.
How about 50,000 miles? It's possible to make oil last that long with a bypass filter. It'd require oil analysis to be sure the oil and filter don't need changed, however. That's what semis use, and they can run for a million miles. You didn't think they actually stop and change the oil on their truck every 3,000 miles, did you?
How about 50,000 miles? It's possible to make oil last that long with a bypass filter. It'd require oil analysis to be sure the oil and filter don't need changed, however. That's what semis use, and they can run for a million miles. You didn't think they actually stop and change the oil on their truck every 3,000 miles, did you?
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Diesel engines are designed for that oil, and are also designed for that type of useage. That ALSO is not a race, high RPM, or short bursts of speed application. Hence why they don't need to change thier oils. I never said synthetic wasn't supierior. Im simply going by what Crower sugests, since I am using thier parts, I assume they know wtf they're doing.
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Originally posted by "Illswyn"
What items, please give examples, or any kind of information that shows that synthetic oils are inferior to petroleum oils. Any situation.
Aside from the case of pre-existing seal cracks, I can't think of any reason I wouldn't use synthetic in any car.
What items, please give examples, or any kind of information that shows that synthetic oils are inferior to petroleum oils. Any situation.
Aside from the case of pre-existing seal cracks, I can't think of any reason I wouldn't use synthetic in any car.
I used Mobil 1 syn almost exclusively on my stock engine. While I never burned any oil in stock form, on my Built engine it was a different story. My engine would go through sythetic like a child with a bag of candy.
Cast aluminum piston have a very very small metallic expansion rate under heat or (contraction?) under cold, meaning you will almost always have the same clearances in your cylinders.
Aftermarket Forged Pistons arent as nice in that sense. While they are stronger than the stock pistons, they expand more than the stock ones once they heat up, and contract more when they cool.
What does that mean? The clearances arent as tight with forged pistons. so running thin motor oil like mobil 1 syn, will cause you to burn oil on warm ups or possibly other situations.
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Wondeful #'s you show there...convenient to change your oil every 13K miles.
I guestimate my honda is worth 140K also. I have tried synthetic, and no freaking way in hell will I be able to go 12000 miles. Synthetic, from what I have seen in my car is only good for an extra 1000, so to me not worth it at all.
Maybe that Amsoil is some miracle oil, but Castrol Synthetic didnt do quat for me.
Whatever lubricates you pistons the way u like, use it. I will use my cheap $1 a quart oil and change every 3K miles.
Cali
I guestimate my honda is worth 140K also. I have tried synthetic, and no freaking way in hell will I be able to go 12000 miles. Synthetic, from what I have seen in my car is only good for an extra 1000, so to me not worth it at all.
Maybe that Amsoil is some miracle oil, but Castrol Synthetic didnt do quat for me.
Whatever lubricates you pistons the way u like, use it. I will use my cheap $1 a quart oil and change every 3K miles.
Cali
Originally posted by "Illswyn"
cali, how much is your engine worth?
140,000 miles on my Mazda. If the oil was changed every 3,000 miles as claimed, he changed the oil about 45 times.
Regular oil- $1/qt x 5 qts. every 3,000 miles. $5/filter every 3,000 miles.
Synthetic oil- $5/qt x 5 qts. every 25,000 miles. $10 filter every 12,500 miles.
Regular - 46 oil changes $233 in oil. $233 in filters. 233 quarts of oil.
Synthetic- 5.6 oil changes $140 in oil. $112 in filters. 28 quarts of oil.
Total : Regular $466 Synthetic $252
Even if you double the interval of synthetic, and change oil and filter at 12,500 miles, it's cheaper at $392.
Which is cheaper again? And which is better for the environment, when you consider how much used oil we're disposing of? Even if you change the oil every 12,500 miles because of hard driving conditions, it's still cheaper, better for the environment, and it gets done much less often.
So the oil is superior, the filters are superior, and the cost is actually LESS over time. And yet you'd argue that synthetics aren't worth their cost?
If there is a problem with my numbers...if you think they're off, just say so. I'm open to other calculations, but I think mine are quite reasonable.
cali, how much is your engine worth?
140,000 miles on my Mazda. If the oil was changed every 3,000 miles as claimed, he changed the oil about 45 times.
Regular oil- $1/qt x 5 qts. every 3,000 miles. $5/filter every 3,000 miles.
Synthetic oil- $5/qt x 5 qts. every 25,000 miles. $10 filter every 12,500 miles.
Regular - 46 oil changes $233 in oil. $233 in filters. 233 quarts of oil.
Synthetic- 5.6 oil changes $140 in oil. $112 in filters. 28 quarts of oil.
Total : Regular $466 Synthetic $252
Even if you double the interval of synthetic, and change oil and filter at 12,500 miles, it's cheaper at $392.
Which is cheaper again? And which is better for the environment, when you consider how much used oil we're disposing of? Even if you change the oil every 12,500 miles because of hard driving conditions, it's still cheaper, better for the environment, and it gets done much less often.
So the oil is superior, the filters are superior, and the cost is actually LESS over time. And yet you'd argue that synthetics aren't worth their cost?
If there is a problem with my numbers...if you think they're off, just say so. I'm open to other calculations, but I think mine are quite reasonable.
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cali, I didn't use those numbers for convenience. If I used it, which I plan to figure out how much it will cost to switch over, I would have no trouble at all with trusting it for 25,000 miles.
It's not a miracle oil. It's designed to last that long. Yes, other synthetics are made to last twice your normal oil change interval, and cost $4/qt. They'd love you to only go 4,000 miles on their oil, because then you buy more.
Amsoil's oil is designed for "extended drain" which just means it's meant to go longer between oil changes.
I picked 25,000 miles because that is how it is stated on their webpage. I cut that amount in half for my turbo engine, or for hard driving. Even at 12,500 miles, it costs less. Should I calculate how many miles it would last to cost the same amount? What more do you need to hear?
No you can't just run any synthetic for 25,000 miles. They have to be specially made for it. Amsoil is, many others aren't. NEO (www.neosyntheticoil.com) is another that is made for extended drain intervals.
It's not a miracle oil. It's designed to last that long. Yes, other synthetics are made to last twice your normal oil change interval, and cost $4/qt. They'd love you to only go 4,000 miles on their oil, because then you buy more.
Amsoil's oil is designed for "extended drain" which just means it's meant to go longer between oil changes.
I picked 25,000 miles because that is how it is stated on their webpage. I cut that amount in half for my turbo engine, or for hard driving. Even at 12,500 miles, it costs less. Should I calculate how many miles it would last to cost the same amount? What more do you need to hear?
No you can't just run any synthetic for 25,000 miles. They have to be specially made for it. Amsoil is, many others aren't. NEO (www.neosyntheticoil.com) is another that is made for extended drain intervals.
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You said you tried synthetic...for how long? Did you do anything besides drain and fill with synthetic? For an older engine, you should first use a engine flush to get the old crap out. The filter is important as well. That's why I included filter costs.
I don't know what would convince you. I pointed you to the Amsoil website. If you didn't read it, you're asking questions based on your experience with another oil, not designed for extended drains. Then you question my numbers, which were fairly conservative.
Synthetic oils are made for both diesel and gasoline engines. I still don't quite see how synthetic oils are "thinner" than conventional oils. I'm emailing their tech-support to find out what the story on that is.
I don't know what would convince you. I pointed you to the Amsoil website. If you didn't read it, you're asking questions based on your experience with another oil, not designed for extended drains. Then you question my numbers, which were fairly conservative.
Synthetic oils are made for both diesel and gasoline engines. I still don't quite see how synthetic oils are "thinner" than conventional oils. I'm emailing their tech-support to find out what the story on that is.
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Whe i trie dsynthetic oil...I DID a full engine flush.
BUT like my previous post said: AMSOIL must be some sort of miracle oil, becaus eI have tried the off the shelf ( castrol) and wasnt worth it.
I did read amsoil website, but for a company claiming such lon gtime between changes, Id think they'd have more of a Gurantee style statement with them.
Ill stick to my cheap oil, you stick to yours. BTW
How long have u used Amsoil for? TIme wise and mileage wise.
BUT like my previous post said: AMSOIL must be some sort of miracle oil, becaus eI have tried the off the shelf ( castrol) and wasnt worth it.
I did read amsoil website, but for a company claiming such lon gtime between changes, Id think they'd have more of a Gurantee style statement with them.
Ill stick to my cheap oil, you stick to yours. BTW
How long have u used Amsoil for? TIme wise and mileage wise.
Originally posted by "Illswyn"
You said you tried synthetic...for how long? Did you do anything besides drain and fill with synthetic? For an older engine, you should first use a engine flush to get the old crap out. The filter is important as well. That's why I included filter costs.
I don't know what would convince you. I pointed you to the Amsoil website. If you didn't read it, you're asking questions based on your experience with another oil, not designed for extended drains. Then you question my numbers, which were fairly conservative.
Synthetic oils are made for both diesel and gasoline engines. I still don't quite see how synthetic oils are "thinner" than conventional oils. I'm emailing their tech-support to find out what the story on that is.
You said you tried synthetic...for how long? Did you do anything besides drain and fill with synthetic? For an older engine, you should first use a engine flush to get the old crap out. The filter is important as well. That's why I included filter costs.
I don't know what would convince you. I pointed you to the Amsoil website. If you didn't read it, you're asking questions based on your experience with another oil, not designed for extended drains. Then you question my numbers, which were fairly conservative.
Synthetic oils are made for both diesel and gasoline engines. I still don't quite see how synthetic oils are "thinner" than conventional oils. I'm emailing their tech-support to find out what the story on that is.
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