I had my 30k service done at Volvo now in Arizona (where I bought the car) the dealer was using 5w-20 and the car states 5w-20. However, now I had the car serviced in VA and the dealer used 10W-30. The dealer stated that it's the correct weight for the location. I mean I am taking his word on it but in reality, is it?
Also, when I opened the oil cap the oil under the cap was still brown (shouldn't it be honey? if new oil?). The car doesn't have a dipstick so I can't check the color of the oil via dipstick. Yes I know that color doesn't mean anything but still if a new oil is added and the car is only driven 3 miles, shouldn't the color of the oil under the cap (at the engine portion not the cap portion) be at honey honey colored?
Finally, I want to keep the car as long as possible so what additives would you recommend (assuming I am doing 10k oil changes as recommended). I am currently using Liquid Moly 2009 formula but I was thinking of doing 50/50 liquid Moly and lubegard bio-tech (i.e. half the amount of liquid moly bottle will be replaced with bio-tech).
Also, when I opened the oil cap the oil under the cap was still brown (shouldn't it be honey? if new oil?). The car doesn't have a dipstick so I can't check the color of the oil via dipstick. Yes I know that color doesn't mean anything but still if a new oil is added and the car is only driven 3 miles, shouldn't the color of the oil under the cap (at the engine portion not the cap portion) be at honey honey colored?
Finally, I want to keep the car as long as possible so what additives would you recommend (assuming I am doing 10k oil changes as recommended). I am currently using Liquid Moly 2009 formula but I was thinking of doing 50/50 liquid Moly and lubegard bio-tech (i.e. half the amount of liquid moly bottle will be replaced with bio-tech).