Im doing an oil change tomorrow before winter in my caddy. my dad buys quaker state 10W-30, but i dont know how much of a difference 5W-30 would make during cold starting. Anyone swiitch oils in different seasons, and is there a big difference??elwesso said:Remeber guys..... TYPE OF OIL IS MUCH LESS IMPORTANT THAT FREQUENCY OF CHANGING...... Personally, I like synthetic (im a valvoline fan, IMO equal to M1 and a wee cheaper).... Its just overall cleaner than dino...... I know everyone has a pro and con about it, but I like syn....
Also, when using synthetic, use a thicker grade than if you were using dino!
Welcome to CF !!!
What testing and wear measurements vs. time and mileage have you done to verify that Castrol Edge is in fact better than other highly rated synthetic engine oils?
Sure, Castrol makes some fine lubricants - but so does every other recognized name brand on the planet. I was running Castrol 20, 30, and 40 weights in Jaguars, MGs, Austin Healeys back in the 50s! No such thing as SAE, -W, or multigrades then.