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Any bad side effects of applying Collinite 845 to clear plastic headlights after cleaning them first with compound or plastic cleaner? I would assume that some type of protective coating on clear plastic would be good...

I tried Meguiar's Ultimate Compound on several cars to clean up the headlights and I think it works better than Meguiar's Headlight Cleaner. The compound was more aggressive and removed more of the yellow film than the headlight cleaner. A coat of Collinite 845 afterwards finished the job.

I tried Meguiar's Ultimate Compound (black bottle) and was really impressed the results. It really cleaned the paint of residue and removed light scratches. I put Meguiar's Cleaner Wax on top of it and was really impressed overall. I detailed cars 20 years ago and always used Meguiar's products...

I want to use a larger oil filter on my 2000 Nissan Frontier (4 cylinder). What criteria do I have to consider when selecting an oversized oil filter? Besides making sure the oversized filter seals correctly (same size o-ring rubber seal and the internal threads on the base plate are the same...

I am curious about the effect that oil viscosity has on MPG. I currently drive a 99 Civc which calls for 5-20W oil. However, I have been using Valvoline Full Synthetic 10-30W since I get it for free. Can 10-30W reduced my gas mileage? It sounds a little silly considering that the car is driven...