ANyone out there who knows a little about oil please hit me back on this forum and let me know what is a good brand of Syn oil and the proper weight for summer driving in a 00 Elantra. I tried royal purple (10w-30) on my recent change, I checked it this morning and its alredy getting kinda dark after only 1000 miles and lite driving. If it helps I have over 100g in miles. ANy opinion would help. Holla -VgB, inc. AVANTE.