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Old 02-22-2011, 03:47 PM   #1
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Default Motor Oils and Oil Filters

Over the years I've read a couple excellent references regarding motor oils and oil filters, and I'd like to share these with you guys. If you want to broaden your knowledge and want to be able to make better buying decisions with regard to motor oil and oil filters (which are extremely important), I would very highly recommend you read these articles. Don't forget the "next page" link at the bottom of the first article.

Engine Oils
http://www.carbibles.com/engineoil_bible.html

Engine Oil Filters
http://minimopar.knizefamily.net/oilfilters/index.html
http://minimopar.knizefamily.net/oil.../opinions.html
http://minimopar.knizefamily.net/oil...reference.html
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Old 02-22-2011, 03:58 PM   #2
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That is some great reading, the guy did some time consuming scientific measurements.

Thanks for posting!
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Old 02-22-2011, 04:03 PM   #3
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Nice write up. We should include it in Tech Info with the gratuitous source link.

I like synthetic and premium oil filters. Not alot of extra expensive for what your protecting. Haven't had a sludge problem in years. No favorites or assumed "Best" I read an exhaustive study that put all the major synthetics about on equal ground. Amsoil was #1 with Mobil 1 next but "Life curve" showed Mobil taking the lead over a couple thousand miles. For me it'* whatever name brand is on sale at Wally. I go 9-10k depending on the oil monitor and it still isnt the black of Dino @ 3k when i dump it. I think the best appearance so far when dumped goes to Castrol Syntec. Very impressed with it'* look coming out the drain. Not that I'm sure that has any indication of it'* quality.
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Old 02-23-2011, 12:10 PM   #4
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In the early '90s a guy came to the shop where I worked with his Porsche 948 and specified I should drain the oil and refill with Mobil 0w60 fully synthetic. This was on a Friday, on the following Monday he was back wanting it all drained out again and refilled with Castrol GTX, the standard oil of the day.
He told me he had used 4 litres of oil on a 350 mile round trip with a cloud of blue smoke following him.
I couldn't figure out why it went so wrong and still don't know why. The car was in first class order and the owner was clearly proud of his car and didn't mind spending the money required to keep it that way.
He came back regularly for oil changes and never had any more problems with the regular Castrol we filled it with, I never used Mobil myself for years after that.
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Old 02-23-2011, 12:51 PM   #5
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My first assumption would be that the 0w60 was too thin for the car. It didn't call for that did it?
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Old 02-23-2011, 06:57 PM   #6
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Quote:
Originally Posted by ymmot04 View Post
My first assumption would be that the 0w60 was too thin for the car. It didn't call for that did it?
Actually, it would be WAY too thick when hot, and way too thin when cold. Higher weight numbers represent thicker oil grades.
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Old 02-23-2011, 10:11 PM   #7
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yeah bubba has autzone oil with a fram filter at the moment...Just a quicke change.It was one of them days i was being a cheap skate lol..ive only got about 400 miles on it it will come out and get its usual high mileage blend around 1k
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Old 02-23-2011, 11:01 PM   #8
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A regular Fram with the clockspring of death???
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Old 02-24-2011, 12:20 AM   #9
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WTH is the clockspring of death lol???
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Old 02-24-2011, 11:46 AM   #10
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Apperantly this was an oil approved by porsche (around 1991 btw), the car had 35000 miles on it at the time and a full service history,
20w50 & 15w40 were the normal weight oils used in Europe at the time. I agree 0w was too thin and 60 a bit thick however I wasn't about to say Porsche didn't know what they were talking about, I don't wave a flag for them but I don't dispute their reputation for high quality engineering.
Going back to filters a friend had a Toyota Celica, when he put a fram filter on it the oil light stayed on for a couple of seconds after starting, when he put a genuine Toyota filter on it went out almost instantly.
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