Hello All,
I know the synthetics are great and all. But will they work in a roadster??
Why is the oil change time so short?? 6 months is it?? How would switching
to Mobil one change that?? Or is there something 'special' about the U-20's
that require the regular oil changes??
Daniel 69 2000
SF CA
> I've used Mobil 1 in my cars since it came out in 1976. Mainly because I
> worked for Mobil at the time and now because I'm in sales, drive a lot, and
> it is nice to change oil only every 25,000 (saves time). Used it in a 77
> Datsun 810 for 150,000 and a 89 Volvo 240 for 240,000 miles. No problems
> in either car and even at a change interval of 25,000 absolutley zero sludge.
>
> I don't use it in either of the roadsters as they have enough trouble
> keeping oil on the correct side of the rear main seal.
>
> Ray
>
> 68 1600
> 68 2000
>
> At 11:11 PM 12/26/1999 -0500, Rob Robinson wrote:
> >I've used Mobil1 15w50 in my 2000 since the last overhaul...about 5000
> >miles. Changed it every 500 or so. Yeah, seems like overkill, but a
> >substantial portion of the run time is spent at full throttle/high rpm, or
> >else sitting in my back yard between autocrosses. I just change it twice a
> >year.
> >
> >Yes, I do mean "since overhaul", including break in. The idea that synthetic
> >oil is "too slick" to seat rings/bearings etc is not entirely
> >correct.Synthetic oil is almost certainly a "slicker" lubricant, and it
> >certainly flows better, thus making leaks much more pronounced. I've heard
> >many engine builders swear that mineral oil must be used during break
> >in...but the funny thing is, many manufacturers deliver new cars with
> >synthetic oil installed at the factory. GM, Lotus, and Nissan to name a few.
> >(I was told this by a Mobil1 rep who spoke to our local SCCA chapter a few
> >years ago, and verified it later in conversations with dealers)
> >
> >Non-Roadster content below....
> >
> >I use Mobil1 10w30 at 3k intervals on my '90 Maxima, which is the
> >spousemobile/tow vehicle for the roadster or a 17ft boat (140 I/O). The
> >Maxima has about 170k now with zero problems other than regular maintenance
> >items, and still gets 30mpg highway and 23mpg towing! My daily driver (VW
> >Rabbit diesel) has always had Shell Rotella 15w40 at 3k intervals, and after
> >about 290k with no engine related problems, it still gets better than 50mpg
> >highway. BTW, I tried Mobil1 once in the VW at about 200k, but it used over
> >a quart in 500 miles compared with about a pint in 3k with Rotella.
> >Needless to say, I switched back.
> >
> >Rob Robinson
> >CSP 67 2000
> >Roanoke, VA
> >
> >
> >
> >
>
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