Here is something I heard from an AMMZOIL rep.,about Mobil 1. He stated that he talked to a just retired Mobil engineer,and that when EXXON merged with Mobile,they EXXON,changed,downgraded,the additives in the Mobil
1 oil,for more profit. During some brand tests,the Mobil isn't quite what it was before. I am still using it in my 85 351 LX though.
<font size=-1>[ This Message was edited by: Mus408 on 2001-06-21 22:14 ]</font>
I have talked to reps. at Valvoline,and Roush Performance. They all say to keep the factory warranty coverage,use only the 5W-20 weight oils. Something must have changed in the piston ring package,or lube system,but FORD won't say. So for now I will go with that until further info. turns up. A synthetic version would be best.....When I can find it.
there are 2 schools of thought. some say you shouldn't change to synthetic until after 3000 miles cuz part of thr break-in process REQUIRES the friction of standard oils.
synthetics eliminate a little of that friction some people believe is necessary for initial break-in. and they may be 100 % correct. as everything, different people feel differently about the 2 different thoughts!!
hope they are wrong since i changed to synthetic @ 500 miles!!!
2001 Bullitt DHG #648
<font size=-1>[ This Message was edited by: mystang99 on 2001-06-22 14:08 ]</font>
When I was at the dealer the other day, I asked the head technician his opinion of synthetic oil vs. regular & what he thought was a proper break-in period. He said, in his opinion, break-in requires more friction between the rings & cylinder walls & he wouldn't change to synthetic until after 2,000 miles. He also said he thought synthetic was probably the better oil to use, but there's not much difference between it & a good brand of regular oil. My thoughts exactly.
DAMN IT YOU GUYS!!!!
cut it out, i'm perfectly happy being a dinosaur and/or an old dog who CAN'T learn new tricks.
in the last month, i've stopped using 92 octane for every fill-up like i've done for the last 5 years and started using 89 and 87 octane. And now you send me intelligent, relavent information on new technology making it seem to be OK to use 5W-20 oil!!
sigh, it's so much easier living in my dark, static, unwilling to change universe!!!!
Well, I just hit 1000 miles today and I plan to put in reg. 5w20 Valvoline. Then at 3000 miles go to Valvoline synthetic 5w20.
My brother-n-law went to an oil testing class about 6-7 years ago and Valvoline and castrol were 1&2 in every area with a big drop to #3. Penzoil was the worst and they recomended not to even put it in a lawn mower. However, they did not test synthetics. I have also heard not to put in a synthetic till break in is over.
Does it really matter anyway?
I did my oil change at 961 miles, used the Motorcraft 5W-20. Gonna stick with it for a while.
I've also heard that you shouldn't use synthetics right away, and even to wait until 20,000 miles before you start using it. When I was working in an auto parts store, that's what I used to tell people too.
Also, the heiarchy of oils that I recall was: Kendall, Castrol, Valvoline...etc. Quaker State was supposed to be up there too. Pennzoil was always the worst in the "independent lab" studies that I read, but who knows who paid for them. BUT to this day, I won't run Pennzoil in my lawn mower either.
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