2010 oil leak ... - Toyota Yaris Forums

Happy Little Pony · 02-18-2011, 05:16 PM

Your head gasket can't tell if you're using synthetic oil. The difference between a modern conventional oil and a synthetic isn't very large. The main advantages of a synthetic are that it pumps easier in extremely cold temperatures, it doesn't break down with high heat, and it has a more robust additive pack so it can stay in longer. None of these things will affect the head gasket.

The cause of your problem is surely something much more basic, like the head bolts didn't get torqued enough or the head gasket is defective.

Also, I really don't think synthetic is going to hurt the longevity of your engine. At worst, it's no better than conventional and you've wasted money paying more for it. It's just oil. A much more highly engineered and expensive oil, but still just motor oil. It's not magic engine juice.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Yaris Oil Change DIY	rningonfumes	DIY / Maintenance / Service	91	01-11-2019 07:18 PM
A Mystery Oi'll Say!	Yar Is Word	Fuel Economy Forum	16	05-11-2013 04:22 AM
Noticed possible oil leak ...	Hershey	DIY / Maintenance / Service	45	07-07-2010 11:51 PM
Synth Blend Oils	scape	DIY / Maintenance / Service	7	07-12-2009 01:55 PM
Motor oil debate - interesting info but a long read.	mikeukrainetz	General Yaris / Vitz Discussion	6	12-10-2006 08:16 PM

02-18-2011, 05:16 PM	#40
Happy Little Pony Drives: 2007 Yaris HB Join Date: Dec 2009 Location: Tampa, FL Posts: 83	Your head gasket can't tell if you're using synthetic oil. The difference between a modern conventional oil and a synthetic isn't very large. The main advantages of a synthetic are that it pumps easier in extremely cold temperatures, it doesn't break down with high heat, and it has a more robust additive pack so it can stay in longer. None of these things will affect the head gasket. The cause of your problem is surely something much more basic, like the head bolts didn't get torqued enough or the head gasket is defective. Also, I really don't think synthetic is going to hurt the longevity of your engine. At worst, it's no better than conventional and you've wasted money paying more for it. It's just oil. A much more highly engineered and expensive oil, but still just motor oil. It's not magic engine juice.