gmrulz4u Posted October 3, 2003 Report Share Posted October 3, 2003 My mechanic has always put in 5 Litres of Mobil 1 Synthetic every time I've had an oil change done. I recently found that my Owners Manual states: 4 qt (US) Note: Additional oil may be required to bring oil level to full mark when changing oil filter. If 5 Litres = 5.2835 US qt's, does this mean my mechanic has been putting TOO much oil in my 2.8L engine? Or is it really no big deal, and nothing to worry about? I assume it's impossible to predict just what exactly is meant when GM says "Additional oil...", I mean how much is considered too much? Is 1.3 quarts too much? How much do you 2.8-3.1 guys put in when you change your oil? THANKS! Quote Link to comment Share on other sites More sharing options...
Redfox340 Posted October 3, 2003 Report Share Posted October 3, 2003 If using the shorty filter @ 4.25 quarts - right on with the dipstick If using the bigger compadable filter @ 4.75 quarts - right on with the dipstick. Who told you to put 5 quarts in? Surprized it hasn't blow-backed or foamed on you! :shock: - Erik Quote Link to comment Share on other sites More sharing options...
Power-Glide Posted October 3, 2003 Report Share Posted October 3, 2003 Prime the filter before installation Quote Link to comment Share on other sites More sharing options...
H.P.Productions Posted October 4, 2003 Report Share Posted October 4, 2003 in my 3.1 I always use 5 qaurts of 40 weighte oil... when you drive highe milage engines hard its suggested you use 40 weighte... and theirs no danger in adding 5 qaurts to your engine Quote Link to comment Share on other sites More sharing options...
PaPaPooh Posted October 4, 2003 Report Share Posted October 4, 2003 i put 4 and add as it needs it after a few miles Quote Link to comment Share on other sites More sharing options...
Robby1870 Posted October 4, 2003 Report Share Posted October 4, 2003 Always around 4.75 qts for me. Quote Link to comment Share on other sites More sharing options...
mdelorie Posted October 4, 2003 Report Share Posted October 4, 2003 I've always used 5qts of 10W30 synthetic. never need to add between changes, 250 000 kms. Quote Link to comment Share on other sites More sharing options...
J Posted October 6, 2003 Report Share Posted October 6, 2003 between 4.75 qts an 5 for me everytime of 5 w 30 synthetic later Jay Quote Link to comment Share on other sites More sharing options...
per0781 Posted October 6, 2003 Report Share Posted October 6, 2003 4.5 quarts for me Quote Link to comment Share on other sites More sharing options...
sonyman87 Posted October 7, 2003 Report Share Posted October 7, 2003 wtf. i have to put in 6 qts. sometimes 6.5 qts.. its freakin expensive i use mobil 1 synthetic. STP oil filter factory specs. 5 qts barly tuches the bottom hole in the dipstick sometimes lower then the hole. its a 95 3.4dohc i jack up the passanger side so i can slid under and drain the oil. do you think that would have anything to do with it?... im not stuipd i check the oil after getting the car back to ground level. Quote Link to comment Share on other sites More sharing options...
J Posted October 7, 2003 Report Share Posted October 7, 2003 wtf. i have to put in 6 qts. sometimes 6.5 qts.. its freakin expensive i use mobil 1 synthetic. STP oil filter factory specs. 5 qts barly tuches the bottom hole in the dipstick sometimes lower then the hole. its a 95 3.4dohc i jack up the passanger side so i can slid under and drain the oil. do you think that would have anything to do with it?... im not stuipd i check the oil after getting the car back to ground level. :? :?: did anyone ever put a larger oil pan on it? The wifee's 96 gtp takes only 5 later jay Quote Link to comment Share on other sites More sharing options...
sonyman87 Posted October 7, 2003 Report Share Posted October 7, 2003 nope. i wonder if its the wrong dipstick but it looks the same as all the other 3.4dohc moters i have seen Quote Link to comment Share on other sites More sharing options...
5speedz34 Posted October 7, 2003 Report Share Posted October 7, 2003 No but for some reason it seems the 3.4 always takes more then neccesary. Mine takes 5.5-6.0, my friend I know had to put almost 6 in! Quote Link to comment Share on other sites More sharing options...
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