earle@oblio.DEC (Mr. SPPR) (12/03/85)
First before I start I would like to suggest all the gung-ho-'50's-all-metal- -Chevy-no-way-gonna-put-no-synthetic-sh*t-in-this-here-auto beings to refrain from flaming me unless you're going to add to the discussion with some relevant experience. To those (one person in particular who wrote alot about it a couple of days ago) who can discuss this, I would like to know what happens to new car engine war- renties. I have a 4-cyl. turbo engine that has a stipulation (as many probably do) that I change the oil every 3000 miles. For my trip to work this change oc- curs about once every 33 days. I used a synthetic oil once (total change) but went back to regular 'TURBO' accented oils later because of the cost. It seemed to me that there was a BIG discrepancy in my car manuf. suggesting that I change the oil every 3000 miles and the (for example) MOBIL 1 can suggesting that I could go for about 25000 miles. Wait a minute.?!? Will I void my warranty if I use MOBIL 1 or equiv. at 6000-7000 mile changes? Could I make a note on the receipt that I used MOBIL 1? Would that suffice? Or am I making to much out of the mileage so long as one can see that the engine has been well taken care of. Any responces are gratefully thanked in advance. George Earle DECVAX!DECWRL!RHEA!OBLIO!EARLE
dennis@vrdxhq.UUCP (R. Dennis Gibbs) (12/04/85)
In article <1568@decwrl.UUCP>, earle@oblio.DEC (Mr. SPPR) writes: > To those (one person in particular who wrote alot about it a couple of days > ago) who can discuss this, I would like to know what happens to new car engine > war- renties. I have a 4-cyl. turbo engine that has a stipulation (as many > probably do) that I change the oil every 3000 miles. For my trip to work this > change oc- curs about once every 33 days. I used a synthetic oil once (total > change) but went back to regular 'TURBO' accented oils later because of the > cost. It seemed to me that there was a BIG discrepancy in my car manuf. > suggesting that I change the oil every 3000 miles and the (for example) MOBIL 1 > can suggesting that I could go for about 25000 miles. Wait a minute.?!? There is a phrase printed on containers of Mobil 1 (and Amsoil) that for turbocharged and diesel engines, you should follow manufacturer's recommended drain intervals. I think that's pretty good advice, considering the strain that a turbo puts on oil. You could probably go a little longer with synthetic, but I wouldn't try it. > > Will I void my warranty if I use MOBIL 1 or equiv. at 6000-7000 mile changes? > Could I make a note on the receipt that I used MOBIL 1? Would that suffice? Or > George Earle > DECVAX!DECWRL!RHEA!OBLIO!EARLE I suspect you would void your warranty if you exceed the recommendations in the owner's manual, no matter what brand or type of oil you use. Since the manual and the makers of the synthetic say you should stick to the same drain interval, I would do so. It's not worth taking chances. I think a synthetic would be very beneficial in a turbocharged engine, but as you have found out, paying $3.50 a quart every three thousand miles gets quite expensive. Dennis Gibbs