Mechanic put castrol gtx oil in my car >=[
And no its not... these engines are broken in on synthetic.. its a must.. and it is a big deal
http://www.texlube.com/oilmyths.htm
Myth #6 - Engines have to be “broken in” before using synthetic oil. I need to break in my engine with non-detergent oil. If I use regular oil or synthetic oil in a new engine, my engine will take longer to break in.
Fact: It was common years ago for engine manufacturers to recommend non-detergent oils for engine break-in. This was when the pistons used cast-iron “square-faced” rings and the rings needed to wear some to “seat” into the engine. With today’s technology of oils and engine manufacturing, engine manufacturers no longer recommend the use of non-detergent oils for the break-in period. In fact, engines today are factory-filled with high quality API SL performance motor oil, which contains high levels of detergents and dispersant additives.
Fact: It was common years ago for engine manufacturers to recommend non-detergent oils for engine break-in. This was when the pistons used cast-iron “square-faced” rings and the rings needed to wear some to “seat” into the engine. With today’s technology of oils and engine manufacturing, engine manufacturers no longer recommend the use of non-detergent oils for the break-in period. In fact, engines today are factory-filled with high quality API SL performance motor oil, which contains high levels of detergents and dispersant additives.
Myth #4 - Once you start using synthetic motor oil you cannot go back to conventional oil.
Synthetic and conventional engine oils can't be mixed, or else they react and cause engine problems.
Fact: As long as the synthetic motor oil product and conventional motor oil product meet the viscosity and performance requirements outlined in the vehicle’s owner’s manual, you may interchange them with each other.
Synthetic and conventional engine oils can't be mixed, or else they react and cause engine problems.
Fact: As long as the synthetic motor oil product and conventional motor oil product meet the viscosity and performance requirements outlined in the vehicle’s owner’s manual, you may interchange them with each other.
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Well I guess we will find it if is a myth or not later on haha. Im not that worried I really wanted to upgrade turbos soon anyway. But now if my motor blows then =[
valvoline might know what they are talking about... It's a good read. Even talks about where the myths come from in a lot of cases.
http://www.valvoline.com/carcare/art...cid=2&scccid=1
http://www.valvoline.com/carcare/art...cid=2&scccid=1
You'll be fine. Just change it when you get a chance. BTW I have changed back and forth between synthetic on both a turbo and a non turbo engine. Nothing ever happened. My friend has also went back and forth in a turbo SR20DET and he was fine as well. I probably put another 50,000 miles after that and it was fine.
Last edited by rcheung; Sep 26, 2008 at 08:47 AM.
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It's the other way around that's a problem. If you run a motor for a long time on regular oil then switch to synthetic, the synthetic can break down the buildup on your piston rings and cause you to burn oil. You'll be fine, especially since you already swapped it out
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ok changed it out. Took it for a test drive and it runs amazing. Its weird it feels like its running better than before. it seems like it has more torque and rips through the gears faster. hmm maybe its in my head. But now I have this weird sound when i rev the engine to maybe 2000 rpms and it will do it when im driving too. Here is a video below. Someone said its probably just oil on the belt but I was wondering what u guys thought of it
http://www.flickr.com/photos/8507662@N07/2890612694/
also an offtopic but tragic story =[
as i was testing the car my freakin side skirt flew right off the car. I was making a turn and it just flew to the other side of the lane.WTF! I put it back on but its missing the bottom bolts
http://www.flickr.com/photos/8507662@N07/2890612694/
also an offtopic but tragic story =[
as i was testing the car my freakin side skirt flew right off the car. I was making a turn and it just flew to the other side of the lane.WTF! I put it back on but its missing the bottom bolts
From my understanding, putting regular oil in a motor that has already been running synthetic is a no no. Something about how it deteriorates the seals. I'm not an expert on it but I would change back to synthetic asap and make sure that you keep your receipt from the shop so that if something does happen you can have something to fall back on. Perhaps somebody else can chime in.
Of course it's a myth. Oh wait, I remember reading about microscopic synthicules colliding with conventional oil's dinocules and creating catastrophic engine failures at the molecular level. It was that article written by that guy about that thing...
This is probably a huge debate and I don't want to start one as it has been beat down to a pulp. From what I have heard and read, some people would put conventional oil in a fresh motor to help with the break-in process. Then after the break-in, they would start using synthetic. This wouldn't apply to the OP case but it shows that it's possible to mix conventional and synthetic oil together.
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From: Residing in california for now
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Joined: Sep 2005
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From: Residing in california for now
Who said you can't mix synthetic oil with non-synthetic? It's like putting thick oil into water. The thing is, why would you want to put water-like oil into a motor that has been using thick oil?