ZR2877

i was wondering if switching to synthetic oil using it for a while then going back to regular oil for a few oil changes and then back to synthetic has caused any build up of sludge or cause any other problems. or should i have just picked one and stuck with it thanks

Will Race 4 Food

Any petroleum based oil (non-synthetic) will leave internal deposits. Use a good synthetic, such as the Valvoline synthetic, or??, and stick with it. Why use $5 oil in a big $$ engine?
Cheers. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

ZR2877

has any damaged been done by switching back and forth i sure hope not some1 said it could mess up some seals or something

Will Race 4 Food

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by ZR2877:
<strong>has any damaged been done by switching back and forth i sure hope not some1 said it could mess up some seals or something</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Depends on how long you used it for.. Won'y damage your engine, just build-ups internally..
Use the synthetic!! <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

ZR2877

will race for food thanks for being so fast to respond and the info gonna stick with the synthetic from now on

Will Race 4 Food

ZR2877,
As you guys say in America your welcome! <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

Patman

The new SL rated dino oils are a lot better in the sludge department, as that sludge test got a lot stricter with SL than it was with the old SJ rating system. Synthetic is still better at keeping sludge away, but the gap is closing. As a side note, because SL is harder to acheive, dino oils are now using a much better base oil, a group II+ oil which is effectively somewhat synthetic since it involves rearranging the molecules to make them better.

AlonzoVersion 1.0

Run some gasoline through just to be sure.It will get some of it out if there is any in your motor.

Patman

For removing sludge buildup, I found out about this new product called Auto-rx. I'm going to try it out in my car on the next oil change actually. You can read about it here:

www.auto-rx.com

It comes highly recommended by the guy that is doing my oil analysis (Terry Dyson, the one that just did Trevor D's analysis)

ZR2877

patman when you try this let me know did you really find that much debris in your filter dxbz28@hotmail.com thanks for the info