synthetics rule!
 

so i made the switch to full synthetics over the weekend and i'm never looking back! my mpg jumped by about 5mpg! granted i needed an oil change and this is just over one full tank, but i'm still quite impressed. also having a longer change interval is nice too. plan to change the oil every 10,000 kms now instead of 5000kms.

i think this oil has justified its high price:)

They sure do. I've used nothing but synthetic in all of my vehicles for the past 6 years, and I've run nothing but synthetic in the Buick since I had a new engine put in it ~14 years ago.

-Jay

I only use synthetic because I can't find fossil oils light enough for what I like to run. A healthy fuel system on an engine that is used properly(not babied around ALL the time) and driven over 7 miles on most one-way trips should easily get 7.5K from a dino oil. The tracker's FSM even specifies a normal change interval of 7,500 and my 88 Cressida specified 10,000 miles.

What kind of synthetic oil have you switch to? I thinking about switching to Valvoline SynPower Full synthetic (supposted to be 4 x better then Mobil 1) after my Auto-Rx Engine Clean.

most stores here are very biased towards castrol so i got stuck with castrol 75W-80 synthetic (synmax i think) for the gearbox and castrol 5W-30 syntec for the engine. just used a regular filter.

not really a bad thing, nothing wrong with castrol IMHO but some choice would be nice.

I am considering to change the oil in my Matrix to synthetic oil. This option is available in the dealership where I go to. The main reason that I still have not done that is that against my belief, the dealership does not think that the 8,000 km/6 months oil change period can be prolonged after changing to synthetic oil, which is more expensive. That will render making the synthetic oil pay for itself more difficult.

Yup, been using nothing but synthetics for 30 years. Many benefits to be obtained besides some MPG gains.

When you really want to use some lube that is the ultimate, long lasting, friction reducing, don't have to change it for 150,000 miles or 15 years synthetic . . . try some Synlube.

I put it in at the first oil change at 3,700 miles and added a little to bring it up to full after the first year and currently I am at 22,925 miles, still full and running great. Next May or later next year I will do a filter change when I get to 39,700 miles.

lol wow. maybe one day with a beater i dont care about, but i dont have the balls for that right now

Iv used dino oils for ever. I changed always 3000-5000 miles, and have never had an oil related issue. I had a ford escort that was blowing smoke at 137,000 miles tho. I didn't put all the miles on it. so who knows what happened with the first 80,000 miles. I just bet tho if it has synthetic from day one it would have lasted longer. I am a new synthetic convert tho. My car calls for 5w20. Not many brands even make that, but Mobil one does, so that is what I am using.