Synthetic Oil

[Keaton85]

I'm probably the only one not using Synthethic Oil.

The reason being since I cannot change it myself I

will not pay the $60 plus every 3k. My car has over

175k and has not seen a drop. I do have it changed

every 3k and use the High Mileage 10w-30.

you would be a fool for changing every 3K miles with synthetic. the price ends up being about the same if not better depending with better protection.

Anyway im not going to try and fight the crazy every 3K miles dealer head trip!

I'm currently running Moble1 full synthetic 0W-30 with a NAPA filter for the past 1K miles and its made a great deal of difference in fuel economy and its been staying clean without any burn off or leaks. Idono if i will stick with this though, the verdict is still out. I can tell you one thing for sure, you wont see me spend a cent on dino oil unless its for my lawn mower, buttt haha jk.

I only run mobile1 and NAPA and Mann filters on cars I dont plan on keeping though, It's not what i would run in a car that i would have for 5-10 years.

I will be running Amsoil full synthetic somewhere in the range of 0W-30 to 10W-30 and a Amsoil EaO filter OR a CM 8 micron filter. Oil changes around 5-8K depending on oil analysis and filter changes ever 15K to 20K. I wont be running this till i have a X70 that I will be using for the long hall.

[Che'_Moderator]

you would be a fool for changing every 3K miles with synthetic. the price ends up being about the same if not better depending with better protection.

Mobile one assayed as too thin and high is NOX for me after 3k/7months.

[PaperToast]

I'm currently running Moble1 full synthetic 0W-30 with a NAPA filter for the past 1K miles and its made a great deal of difference in fuel economy and its been staying clean without any burn off or leaks. Idono if i will stick with this though, the verdict is still out. I can tell you one thing for sure, you wont see me spend a cent on dino oil unless its for my lawn mower, buttt haha jk.

i'm curious to know how this goes for you. i had a 0 weight oil disscusion here a while back and didnt really come to a verdict

0 weight oil

[uscgc70]

I used to use Amsoil exclusively, but now that i can't get it on the Island, it's Mobil 1 0w-30 with Mann filters. it's kind of hard to rack up miles here, so everything gets changed at ~ 4 months.

[FistFull]

i know your suppose to change 3k but how long can you keep synthetic in ..???

[swedishiron]

i know your suppose to change 3k but how long can you keep synthetic in ..???

"back in the day" when Mobil 1 was considered a true synthetic I would do 10K mile oil changes on a NA 740GLE, I never had problems. I would have no issues running 10K oil changes on a NA engines unless it had Direct Injection. I usually do 6K on a Turbo engine.

[FistFull]

"back in the day" when Mobil 1 was considered a true synthetic I would do 10K mile oil changes on a NA 740GLE, I never had problems. I would have no issues running 10K oil changes on a NA engines unless it had Direct Injection. I usually do 6K on a Turbo engine.

what....so your saying i can run another 3K without changing....the oil...

[Keaton85]

what....so your saying i can run another 3K without changing....the oil...

ohhh boy, where have you been? under a log? haha... go do some reading, it's al up to the user. I would go 10K with a true quality synthetic and 15K-20K on a nice EaO filter. I would do that before running dino in my car any day of the week. Do a search on synthetic oil and see what the difference is, its pretty profound.

[Che'_Moderator]

ohhh boy, where have you been? under a log? haha... go do some reading, it's al up to the user. I would go 10K with a true quality synthetic and 15K-20K on a nice EaO filter. I would do that before running dino in my car any day of the week. Do a search on synthetic oil and see what the difference is, its pretty profound.

10k only if you are doing 20k a year. 40k a year with 20k a true synthetic. A lot of the data out there is crap because it was done in either lab or in fleet vehicles. Oxidation from moisture, blow by, heat, and everything else kills oil pretty quick unless you are doing 300+ miles a day or something nutty.

[Keaton85]

10k only if you are doing 20k a year. 40k a year with 20k a true synthetic. A lot of the data out there is crap because it was done in either lab or in fleet vehicles. Oxidation from moisture, blow by, heat, and everything else kills oil pretty quick unless you are doing 300+ miles a day or something nutty.

Let me restate that as i messed up on the filter... oil 8K to 10K miles and FILTER 15K-20K on a EaO or CM filter only! I know what you mean though, I used to put 30K on my car when i was younger and fuel was cheap so I was able to get away with a little higher OCI.

Really, almost any quality synthetic changed every 5K - 8K with a quality filter change will be better then most of these 3K miles dino changes out there! but thats just my opinion, which i think oil changes are unless you get an analysis every change.

The one thing people on here need to remember is that its not just the oil you have to worry about, filters have a valve that will open if the filter gets to clogged. This is a VERY bad thing since synthetic will trap dirt particles and turn it into liquid sandpaper. So you want to keep up on filter changes even if you dont change your oil. I change the filter every one in a while depending on the brand of filter and what type of oil im using. At the moment im running a NAPA filter which has a good micron rating but i dont trust it to stand up to 8K miles. I will change this filter out probably around 3K since they are cheap.

[Che'_Moderator]

Careful on the filters. Fram and a few Napas I have looked at have used paper caps and hard plastic drain back valves. They tend to fail at about 5k high way miles or 3k city. This is true for the frams. The Napa filters I only have experience on with the 7.2L Isuzu engine and the 4.6L Ford. Anyways this pretty much says it all:

http://volvospeed.com/Reviews/volvo_K&N_oil_filter.html

[Keaton85]

Careful on the filters. Fram and a few Napas I have looked at have used paper caps and hard plastic drain back valves. They tend to fail at about 5k high way miles or 3k city. This is true for the frams. The Napa filters I only have experience on with the 7.2L Isuzu engine and the 4.6L Ford. Anyways this pretty much says it all:

http://volvospeed.com/Reviews/volvo_K&N_oil_filter.html

I trust NAPA a lot more then i do Fram. I know they are not built well but for the need at hand it's fine. This is the reason I will change the filter out every 2-3K miles.

K&N sounds good but with EaO filters and CM filters it's not worth my time to install anything else unless its for a car i dont intend to go the long hall with**. Is there any reason to go with a K&N filter over a EaO or CM filter system? If so im all ears (I really am looking for your opinion, that wasn't a wise ALL GLORY TO THE HYPNOTOAD remark).

**Dont get me wrong, I take care of the cars I plan on selling, but im not about to drop hundreds of dollars on filters and oil on a car i wont keep for more then 10K miles.

[Che'_Moderator]

The flow rate. 5-10µm particle filtration on something like an oil filter is retarded. Thats what Mann tried and their filters are notorious for being restrictive or just going into by-pass. Whats worse that dirty oil? No oil. For a filter to offer 10µm filtration and no be restrictive it would have to have a lot more than 135^2cm of filter media.

[Keaton85]

The flow rate. 5-10µm particle filtration on something like an oil filter is retarded. Thats what Mann tried and their filters are notorious for being restrictive or just going into by-pass. Whats worse that dirty oil? No oil. For a filter to offer 10µm filtration and no be restrictive it would have to have a lot more than 135^2cm of filter media.

That biggest threat though is the 5µm - 25µm since these are the particles that can get between critical wear surfaces. The number one thing you have to worry about with synthetic is keeping it clean since it traps dirt particles and other contaminates unlike dino oil that gets combined with the contaminates. In other words the more efficient the filter the better for synthetics.

What is the 99% efficiency of the K&N filter? since most companies state only their 50% efficiency.

Also do we know the flow rate of a EaO and CM filters? I would like to find that out as well.

EaO has a efficiency to 98.7 percent at 15µm (unkown flow rate)

CM has a efficiency of 8µm (unknown % and flow rate, will email them to find out)

I know one thing for sure, I have read lots about people having cleaner oil when running a EaO filter then what came out of the bottle!

[Che'_Moderator]

That biggest threat though is the 5µm - 25µm since these are the particles that can get between critical wear surfaces. The number one thing you have to worry about with synthetic is keeping it clean since it traps dirt particles and other contaminates unlike dino oil that gets combined with the contaminates. In other words the more efficient the filter the better for synthetics.

What is the 99% efficiency of the K&N filter? since most companies state only their 50% efficiency.

Also do we know the flow rate of a EaO and CM filters? I would like to find that out as well.

EaO has a efficiency to 98.7 percent at 15µm (unkown flow rate)

CM has a efficiency of 8µm (unknown % and flow rate, will email them to find out)

I know one thing for sure, I have read lots about people having cleaner oil when running a EaO filter then what came out of the bottle!

I dont know where you got your data on the 5µm causing issues but its wrong, or out dated. 5µm is an issue on something like a fuel injector or a fuel pump but poses no issue to the rings or bore. This is all based off military studies conducted on aircraft and heavy service vehicles. As for flow I can get the numbers with some time. When I flowed the filters I only measured back pressure at a static flow rate. I did not bother to measure flow at a set resistance. Reading back over your posts you said "That biggest threat though is the 5µm - 25µm". Without seeing the data or how was was concluded those numbers could have been massaged to saw what the researcher wanted. I am sure 20-25µm cause a substantial amount of wear. But how much wear was caused by particles 5-10 or 10-20? Sort like saying x% of all people who get burned die. Might be 90% fatal to people with 3rd degree burns to 70% of their body but how many die of a burn on their mouth from hot pizza.