Can I use the cheaper 30 weight oil in my Mavericks? Or should I use something like 10W-30? I live in Phoenix area and it does not get too cold here but since I started using the 30 weight oil I noticed that my plugs are fouling up. Do you think the 30 weight did that?
If you have a owners manual look to see what was recomended for the temps in your area. When I lived in Dallas and the temps hit 100+ deg. 10w30 was useless on my new car ('80). 10w40 or 20w50 was recomended. What were you using before you switched to 30wt? If you have worn rings 40wt may slow the fouling down. Are you burning any oil? Valve seals leaking? any smoke?
Thats unusual cause usually its been my experience the straight 30w will help on worn engines. Maybe the detergents in the oil have added to your problem. Are all the plugs fouling up?
I believe the car previously had 10-30 weight oil in it. It does have a leak but I think that is from the oil plug being worn out. I need to get a replacement for that. Does anyone know what size a 74 Maverick uses? The car does burn oil as well and the plugs do foul over time. I think that either a few oil seals or guides are in bad shape. There is a bit of white smoke coming out of the tail pipe as well. I also heard that 30W oil was good for old engines but also hear that using 10W-30 is easier on the engine when you first start up in cold weather. I just had the oil changed at Wally world and had them put in 10W-30. The car is a bear to start and keep an idle in cold weather but that may indicate that the carb/choke may need to be adjusted again. I had the carb rebuilt two years ago.
If the car is burning oil then its gonna foul plugs. Best bet is to get a set of those antifouling adapters that go on the end of the plugs. It raises the plug out of the cylinder so its less likely to foul.
Thanks Mavaholic - I did use one of the adapters on the plug nearest to the firewall and it stopped it from fouling. I think I may put another one on the first plug as well.
