How do you know what oil your mechanic put in?
08-01-2005, 03:12 PM
#1
Don't you know I'm loco?
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How do you know what oil your mechanic put in?
Can synthetic oil make your shifting feel different? That might explain why after bringing my car in to the Mazda dealership for an oil change (and, while I was at it, get the recall/PCM stuff done), my shifting feels completely different.
I noticed this on the way to work today. The sticker that tells you when your next oil change is due says: "Quaker State Synthetic 5W-20"
However, the service invoice says:
5W-20-QT SAE 5W-20 SUP PR MTR: 4 qts. @ $2.85/qt.
I'm not sure if this price reflects what a synthetic would cost (esp. at dealership prices).
So how do you know what they actually put in??
I noticed this on the way to work today. The sticker that tells you when your next oil change is due says: "Quaker State Synthetic 5W-20"
However, the service invoice says:
5W-20-QT SAE 5W-20 SUP PR MTR: 4 qts. @ $2.85/qt.
I'm not sure if this price reflects what a synthetic would cost (esp. at dealership prices).
So how do you know what they actually put in??
08-01-2005, 03:32 PM
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This new learning of yours amazes me, Sir Bedevere! Explain to me again how sheep's bladders may be employed to prevent earthquakes. :D
But seriously forks, I doubt they are going to remember what whoever worked on my car last week put in...and if I were a dealer trying to cover my butt I'd assure the customer that I put in 5W-20 non-synthetic, you betcha.
But seriously forks, I doubt they are going to remember what whoever worked on my car last week put in...and if I were a dealer trying to cover my butt I'd assure the customer that I put in 5W-20 non-synthetic, you betcha.
Last edited by unpocoloco; 08-01-2005 at 03:36 PM.
08-01-2005, 03:40 PM
#5
The Professor
Originally Posted by pebrinic
lick the dipstick if it tastes like plastic, it's synthetic, otherwise, it's dino
But besides that, things are usually MORE expensive at the dealership. Synthetic usually runs upwards of $6 a liter if you buy it yourself.
Can synthetic oil make your shifting feel different?
If anything, if they did use a full synthetic in your car, it would be quieter, cooler, and rev faster.
08-01-2005, 09:35 PM
#6
Registered
... am I going to get beat down for asking this again... but - I run Mobile1 Synthetic in my Jeep (I know, different machine altogether!)... but can I run the same oil in the Renesis effectively?
Thanks speedsters.
Thanks speedsters.
08-01-2005, 09:45 PM
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Yes you can put any oil in your RX-8, but the results may be unpredictable. From what I understand the RX-7 had issues with synthetic oil. When engines were being rebuilt they would find little ***** of gummy oil in the combustion chamber.
Theory being that synthetic does not break down like regular oil, and since oil actually enters the combustion chamber in the rotary, you need it to burn off. Synthetic oil burns at a higher temperature, so after using it long enough you would get these ***** in your engine. Eventually, the ***** would ruin performance because they would interfere with the combustion process.
Short answer; don't use synthetic unless you’re willing to deal with the possibility of long term consequences. Besides, if you’re changing your oil every 3 thousand miles, your unlikely to reap the benefits that synthetic oil offers.
Theory being that synthetic does not break down like regular oil, and since oil actually enters the combustion chamber in the rotary, you need it to burn off. Synthetic oil burns at a higher temperature, so after using it long enough you would get these ***** in your engine. Eventually, the ***** would ruin performance because they would interfere with the combustion process.
Short answer; don't use synthetic unless you’re willing to deal with the possibility of long term consequences. Besides, if you’re changing your oil every 3 thousand miles, your unlikely to reap the benefits that synthetic oil offers.
08-02-2005, 02:02 AM
#9
The Professor
Originally Posted by Pkskull77
Yes you can put any oil in your RX-8, but the results may be unpredictable. From what I understand the RX-7 had issues with synthetic oil. When engines were being rebuilt they would find little ***** of gummy oil in the combustion chamber.
Theory being that synthetic does not break down like regular oil, and since oil actually enters the combustion chamber in the rotary, you need it to burn off. Synthetic oil burns at a higher temperature, so after using it long enough you would get these ***** in your engine. Eventually, the ***** would ruin performance because they would interfere with the combustion process.
Short answer; don't use synthetic unless you’re willing to deal with the possibility of long term consequences. Besides, if you’re changing your oil every 3 thousand miles, your unlikely to reap the benefits that synthetic oil offers.
Theory being that synthetic does not break down like regular oil, and since oil actually enters the combustion chamber in the rotary, you need it to burn off. Synthetic oil burns at a higher temperature, so after using it long enough you would get these ***** in your engine. Eventually, the ***** would ruin performance because they would interfere with the combustion process.
Short answer; don't use synthetic unless you’re willing to deal with the possibility of long term consequences. Besides, if you’re changing your oil every 3 thousand miles, your unlikely to reap the benefits that synthetic oil offers.
14K miles with synthetic here. No issues.
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