PhilT Posted July 28, 2007 Share Posted July 28, 2007 I've seen an engine go over 5 years or almost 500,000 miles without an oil change. But that was in a ship Double Award Winning Legacy GT Wagon Link to comment Share on other sites More sharing options...
schwinn Posted July 29, 2007 Share Posted July 29, 2007 http://neptune.spacebears.com/cars/stories/oil-life.html had run an interesting test on oil life. The "Past Results" section is where you'll find links for the M1 and Amsoil long-term tests. Bottom line was that both seemed to VERY long based on UOAs. You can take from this what you wish. Personally, I use M1 5w30, have no leaks/burning, and have been running it for about 15k miles (only 20k on the car now). Back when I did a ton of research on the matter, I found that I didn't like Castol's claim on "synthetic" since they were are Group III hydrocracked oil, versus the PAO based formulation of M1 and others. Leave it to the lawyers to screw up the differetiation between these! So, it's kinda left a bad taste for me, since I dislike "marketing" when all I want is the facts. Besides that, I had found that syntec also had much higher ash content than other oils (even conventionals). Ash can lead to sludging, which is why it's good to avoid it. Now, maybe they have changed their formula to resolve this issue. But, that's why I don't care for Castrol Syntec, and wouldn't use it myself. I've been using M1 in all my vehicles since I started changing oil myself. My last car lasted 163k miles (1993 Mazda MX6 V6) and continues to run for the new owner. When I started using it, it actually REDUCED oil consumption on that motor - the valve cover gaskets are known leak points on that motor, and yet it never went bad enough to replace (others had replaced them every 30-60k - I never had to). Consumption on conventional oil was about 1qt/3k miles... and became about half that with M1. M1 also silenced the clatter in the hydraulic valve adjusters within 150 miles of using it. So, I trust M1... and will continue to use it for now, at least. That's my take on the matter... Link to comment Share on other sites More sharing options...
j255c Posted July 29, 2007 Share Posted July 29, 2007 my consumption with m1 is terrible i probably add a quart every 1000 miles. Also the dipstick is a POS in this car i never can get consistent reads on it, i check it when its cold its not on the stick, i fill it up... its way passed the full line. I check it when the engine was just turned off... little bit of oil on the bottom of dipstick, i fill up 1/8 quart and its way over the full mark lol. 06 TB EVO IX SE stock turbo monster subaru hater Link to comment Share on other sites More sharing options...
qikslvr Posted July 30, 2007 Share Posted July 30, 2007 I've noticed this too. After all the stink about people loosing oil; I decided to start checking mine all the time and have found that it's real hard to get the same reading twice. It appears to me that the stick goes into the pan a little sideways and the top of the line is either slanted or higher on one side of the stick than the other. Also, I have seen it just below the top hole or Full (not the notch) and added about an 1/8th quart to find that it went way up over the notch. This is irritating to say the least. On any other car I've ever had; this would be at least 1/2 quart or more. Let's kick this pig! Link to comment Share on other sites More sharing options...
psucaptainkickass Posted July 30, 2007 Share Posted July 30, 2007 How much oil are you losing/oil change? And what is your OCI? I am not losing anything, or if I am, its not enough for me to notice. 5k OCI. Link to comment Share on other sites More sharing options...
pillboy Posted July 30, 2007 Share Posted July 30, 2007 I'm going to miss 3 oil changes reading through all the "which oil threads" Oh... so what should I pick up? Castrol Syntec (not the fancy German one, not available here) M1, PP, RP or Redline? I use a quart of each that way I get the benefits of them all. It is still ugly. Link to comment Share on other sites More sharing options...
RudeMood Posted July 30, 2007 Share Posted July 30, 2007 Wait a second, Ferrari and Porsche use something that is also used by a Chevy - say it isn't so Ferrari uses a specially formulated Shell oil. You can only purchase it from a Ferrari dealer. Link to comment Share on other sites More sharing options...
krzyss Posted July 30, 2007 Share Posted July 30, 2007 I use a quart of each that way I get the benefits of them all. I hope you are not serious. You would be better off doing each oil change a different oil. Krzys Link to comment Share on other sites More sharing options...
qikslvr Posted July 30, 2007 Share Posted July 30, 2007 I top off the Valvoline 5w30 conventional oil change the dealer does with an 1/8th quart of Castrol Syntec 5w30 when I'm near the 3K mark and need to add oil. Let's kick this pig! Link to comment Share on other sites More sharing options...
FLASHMSTRC Posted July 30, 2007 Author Share Posted July 30, 2007 I top off the Valvoline 5w30 conventional oil change the dealer does with an 1/8th quart of Castrol Syntec 5w30 when I'm near the 3K mark and need to add oil. Any reason for not using the same oil to top off? If you know they are using Valvoline, why not top off with Valvoline? Link to comment Share on other sites More sharing options...
Subysan Posted July 30, 2007 Share Posted July 30, 2007 Mobil 1. No problems. Change every 3000 miles. 268whp 282wtq. 5-30 winter, 10-30 summer. I've run Mobil 1 in Ducati's, Moto Guzzi's. I mean RUN! HARD! It won't hurt a Subaru even with 400whp. Link to comment Share on other sites More sharing options...
qikslvr Posted July 31, 2007 Share Posted July 31, 2007 Any reason for not using the same oil to top off? If you know they are using Valvoline, why not top off with Valvoline? Because I have a couple quarts of it laying around the garage and need to use it up. It's only in there for a weeks or two before it gets changed (every 3K)anyways so why not. Let's kick this pig! Link to comment Share on other sites More sharing options...
pillboy Posted July 31, 2007 Share Posted July 31, 2007 I hope you are not serious. You would be better off doing each oil change a different oil. Krzys It is still ugly. Link to comment Share on other sites More sharing options...
shiggins Posted July 31, 2007 Share Posted July 31, 2007 Well, after about 12k using Mobil 1 with no additional oil needed between oil changes, I switched to Penzoil Platinum this time on a whim. I've noticed the M1 will go from nearly the full mark to about halfway between full and low marks per oil change....I wonder if the PP will do any different. Either way, I'll probably end up sticking with M1 because Sam's Club carries it and it's served me very well for 3 cars so far.....including my LGT Link to comment Share on other sites More sharing options...
dasbigunit Posted July 31, 2007 Share Posted July 31, 2007 i've heard ferarri's use a new synthetic quaker state. M1 has always treated me well. BMW used to spec a special castrol brand full synthetic for their M5's. do synthetics resist coking in turbos better than dinos? I'm also under the impression that synthetics allow more crap to be picked up between the molecules... Link to comment Share on other sites More sharing options...
FLASHMSTRC Posted July 31, 2007 Author Share Posted July 31, 2007 Vote for PP on my poll in the Maintenance thread. Sorry this was meant to be a reply to psucaptainkickass Link to comment Share on other sites More sharing options...
bosco Posted July 31, 2007 Share Posted July 31, 2007 Vote for PP on my poll in the Maintenance thread. if you want people to vote on your thread why don't you post it here so we don't have to try and find it. bosco Stay Stock Stay Happy Link to comment Share on other sites More sharing options...
FLASHMSTRC Posted July 31, 2007 Author Share Posted July 31, 2007 if you want people to vote on your thread why don't you post it here so we don't have to try and find it. bosco Help a brotha out and move it if possible Link to comment Share on other sites More sharing options...
bskey Posted July 31, 2007 Share Posted July 31, 2007 I think he meant to post a link! life in spin cycle..... Link to comment Share on other sites More sharing options...
bosco Posted July 31, 2007 Share Posted July 31, 2007 I think he meant to post a link! +1 why should i have to hunt it down. bosco Stay Stock Stay Happy Link to comment Share on other sites More sharing options...
FLASHMSTRC Posted July 31, 2007 Author Share Posted July 31, 2007 Vote Here Please: http://legacygt.com/forums/showthread.php?t=67093 Link to comment Share on other sites More sharing options...
jvento Posted July 31, 2007 Share Posted July 31, 2007 Yea mobil 1 is cool when I go to the sub dealer they put it in if u ask them. Link to comment Share on other sites More sharing options...
bosco Posted July 31, 2007 Share Posted July 31, 2007 Vote Here Please: http://legacygt.com/forums/showthread.php?t=67093 thank you. i voted so can i close this thread it's going to go on until the end of time. what is best is to subjective. bosco Stay Stock Stay Happy Link to comment Share on other sites More sharing options...
FLASHMSTRC Posted July 31, 2007 Author Share Posted July 31, 2007 thank you. i voted so can i close this thread it's going to go on until the end of time. what is best is to subjective. bosco True, but if you close it, how will all the people from this thread know to post on my poll? You're killing me Link to comment Share on other sites More sharing options...
awalla5150 Posted August 7, 2007 Share Posted August 7, 2007 wide open throttle... Link to comment Share on other sites More sharing options...
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